Document:

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                                                                   EXHIBIT 10.54

                                     LEASE

This Lease is entered into the 26th day of September, 2003, by and between 3056
Walker Ridge Drive, LC. ("Lessor") by Robert Grooters Development Company
Managing Agent for Lessor, and Rockford Corporation ("Lessee") upon the terms
and conditions stated below:

1. PREMISES: Lessee hereby agrees to lease from Lessor the following described
premises (the "premises"):

X (Multi-Tenant Building) approximately 149,625 square feet of space, in a
building totaling approximately 335,476 square feet located at, 3056 Walker
Ridge, N.W. Walker Michigan, which is shown on the floor plan attached as
Exhibit "A" (See the attached Addendum)

___(Single Tenant Building) the premises situated in the _______of______ Kent
County, Michigan, commonly known as ______ and legally described on the attached
as Exhibit A together with a building containing approximately_____ square feet
to be constructed in accordance with the attached Exhibit B.

2. TERM: The term shall commence on ___ and shall expire on____ (See the
attached Addendum)

3. RENT:

Base Rent. The total annual Base Rent shall be ________ Dollars ($___). In
monthly installments of _____ Dollars ($____) each on the first day of each
month. (See the attached addendum).

Annual Increase. The Base Rent shall increase by ___ percent (___) on the first
Anniversary of the date of this Lease and on each additional anniversary during
the terms of the Lease.

Additional Rent. (Multi-tenant Building). In addition to the Base Rent, Lessee
shall pay to Lessor, as additional rent, sums computed and payable as follows:

                  (a) Lessee shall pay, as additional annual rent, a sum equal
         to the same percentage of the building operating expenses as the floor
         area of the premises beers to the total floor area of the building,
         which, as of this date, is 44.60% ("Lessee's Proportionate Share"). The
         term "building operating expenses" shall include Lessor's direct and
         indirect costs and expenses of every kind and nature paid or incurred
         in the operation and management of the building and surrounding area
         where the premises are located, including, but not limited to the cost
         and expense of hazard, rental value, and liability insurance premiums,
         snow removal, water and sewer, electrical expense, healing fuel
         expense, security charges, management, landscaping, real estate taxes,
         personal property taxes, and special assessments, the cost of
         maintaining, repairing and operating the parking areas and drives
         adjacent to the building, and reasonable depreciation of replacement
         and improvements to the building and equipment used in the maintanance
         and operation of the building. (SEE THE ATTACHED ADDENDUM).

                  (b) Lessor shall render to Lessee a statement showing
         additional rent payable under subparagraph (a) above on a monthly basis
         (or, at Lessor's option for a different fiscal period). Lessee shall
         pay the amount shown on the statement on or before the first day of the
         month following the day in which the statements are rendered.

                  (c) If this lease shall commence or terminate other than at
         the end of a calendar year the additional rent due for the calendar
         year in which the Lease commences or terminates shall be prorated in
         accordance with the duration of the Lease term.

                  (d) Any increase on premiums for hazard insurance that may be
         charged during the term of this Lease from the amount of insurance now
         carried by the Lessor on the premises and on the improvements situated
         on the premises, resulting from the business carried on in the premises
         by the Lessor or the character of its occupancy, whether or not the
         Lessor has consented to the use.

         BUILDING OPERATING EXPENSES

                  All rent shall be paid to Owner or its authorized agent, at
         4633 Patherson Avenue, S.E., Suite B, Grand Repids, Michigan 49512, or
         at such other place as may be designated by Owner from time to time.

         4. SECURITY DEPOSIT: The Lessee deposits with Lessor the sum of Forty
Four Thousand and 00/100 Dollars ($ 44.000.00) ("Security Deposit"). The
Security Deposit shall secure the performance of the Lessee's obligations.
Lessor may, but shall not be obligated to apply all or portions of the Deposit
on account of Lessee obligations. Any balance remaining upon termination shall
be returned to Lessee. Lessee shall not have the right to apply the Security
Deposit in payment of the last month's rent.

         5. LATE CHARGE: In the event that the Lessee does not pay any
installment of Base Rent or additional rent as provided herein, within 6 days
after the date the installment is due, then in addition to the remedies of the
Lessor upon default of the Lessee, the lessor shall be entitled to recover from
the lessee a late charge in an amount equal to five percent (5%) of the
delinquent payment.

         6. PARKING: In the event the premises are part of a Multi-Tenant
Building, Lessee shall be entitled to the nonexclusive use of parking spaces in
the pending area adjacent to the building in which the premises are situated not
to exceed Tenant's Proportionate Share of all spaces. Lessor shall have the
right, at any time during the term, to designate the particular parking spaces
which Lessee shall be entitled to use. The parking shall be used only for
parking passenger vehicles such as automobiles and small trucks. (See the
attached Addendum)

         7. USE: The premises are to be used for office and light manufacturing
uses and for no other purpose without the prior written consent of Lessor.
Lessor has reviewed Tenant's current operations at its current facilities in
Grand Rapids and confirms that comparable operations at the premises will be
permitted uses under this paragraph, subject to Lessee's obligation to carry out
its operations in compliance with applicable law.

         8. USES PROHIBITED: Lessee shall not use any portion of the premises
for purposes other than those specified. No use shall be made or permitted to be
made upon the premises, nor acts done, which will increase the existing rate of
insurance upon the Premises or cause cancellation of insurance polices covering
the Premises. This paragraph will not restrict Tenant's right to carry on
operations comparable to its operations at its current facilities in Grand
Rapids, which are permitted uses, subject to Lessee's obligation to carry out
its operations in compliance with applicable law.

         9. ASSIGNMENT AND SUBLETTING: Lessee shall not assign this Lease or
sublet any portion of the premises without prior written consent of the Lessor.
Any assignment or subletting without consent shall be valid and shall be a
default under this Lease.

         10. ORDINANCES AND STATUTES: Lessee shall comply with all statutes,
ordinances and requirements of all municipal, state and federal authorities
pertaining to the premises, occasioned by or affecting the use of the Premises
by Lessee. The commencement or pendency of any state or federal court abatement
proceeding retaining to Lessee's use of the premises and affecting the use of
the premises shall, at the option of the Lessor, be deemed a default of this
Lease.

         11. MAINTENANCE, REPAIRS, ALTERATIONS: Lessee acknowledges that the
premises are either in good order and repair or, If the premises are not
constructed Lessee's occupancy, following construction, shall constitute that
acknowledgment Lessee shall, at its own expense and at all times, maintain the
premises in good and safe condition, including plate glass, electrical wiring
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and fixtures, plumbing and HVAC installations and any other system or equipment
upon the premises and shall surrender the same at termination in as good
condition as received, normal wear and tear excepted. In the event that Lessee
fails to reasonably undertake any such repairs or maintenance, the Lessor shall
have the right to undertake the maintenance or repair, and any amounts expended
by Lessor in connection with those efforts shall be deemed additional rent and
shall be due and payable immediately upon written notice to Lessee of the
amount. Lessor shall be responsible for all repairs to the roof, exterior walls
and structural foundations except for damage caused by Lessee, its employees,
agents, or invitees.

         No improvement or alteration of the premises shall be made without the
prior written consent of the Lessor. Lessee shall not commit any waste upon the
premises, or if the premises are part of a Multi-Tenant Building, Lessee will
not commit or permit any nuisance or act, which may disturb the quiet enjoyment
of any tenant in the building.

         12. ENTRY AND INSPECTION: Lessee shall permit Lessor or Lessor's agents
to enter upon the premises at reasonable times and upon reasonable notice, for
the purpose of inspecting the premises, and will permit Lessor at any time
within 60 days prior to the expiration of this Lease, to place upon the
premises, "To Let" or "For Lease" signs, and permit persons desiring to Lease
the space to inspect the premises.

         13. INDEMNIFICATION OF LESSOR: Lessor shall not be liable for any
damage or injury occurring on the premises to Lease, or any other person, or to
any property, and Lessee agrees to hold Lessor harmless from any claims or
damages, no matter how caused, excepting only damages resulting from Lessor's
gross negligence or willful misconduct.

         14. POSSESSION: If Lessor fails to deliver possession of the premises
at the commencement of the Lease, Lessor shall not be liable for any damage
caused thereby, nor shall this lease be void or voidable, but Lessee shall not
be liable for any rent until possession is delivered. (See the attached
Addendum).

         15. INSURANCE AND WAIVER OF SURROGATION: Lessee, at its expense, shall
maintain public liability insurance including bodily injury and property damage
insuring Lessee and Lessor with minimum coverage of Five Hundred Thousand
Dollars ($500,000) for each incident of property damage and One Million Dollars
($1,000,000) for each incident of bodily injury with a deductible of not more
than Five Thousand Dollars($5,000) per occurrence. Upon written notice from
Lessor, the amount of the insurance shall be increased to amounts reasonably
determined by Lessor.

         Lessee shall provide Lessor with a copy of the policy of Insurance and
a Certificate of Insurance showing Lessor as additional insured. The Certificate
shall provide for a 10-day written notice to Lessor in the event of cancellation
or material change of coverage.

         To the maximum extent permitted by insurance policies which may be
owned by Lessor or Lessee, Lessee and Lessor, for the benefit of each other,
waive any and all rights of subrogation, which might exist against the other.

         16. UTILITIES: Lessee agrees that it shall be responsible for the
payment of all utilities, including water, gas, electricity, heat and other
services delivered to the premises. (See the attached Addendum).

         17. SIGNS: Lessor reserves the exclusive right to the roof, side and
rear walls of the premises. Lessee shall not construct any projecting sign or
awning without the prior written consent of Lessor which consent shall not be
unreasonably withheld.

         18. ABANDONMENT OF PREMISES: Lessee shall not vacate or abandon the
premises at any time during the term, and if Lessee shall abandon or vacate the
premises, or be dispossessed by process of law, or otherwise, any personal
property belonging to Lessee left upon the premises after notice from Lessor
shall be deemed to be abandoned.

         19. CONDEMNATION: If any part of the premises shall be taken or
condemned for public use, and a part remains which is suitable of occupation,
this Lease shall, as to the part taken, terminate as of the date the condemnor
acquires possession. Thereafter Lessee shall be required to pay such proportion
of the rent for the remaining term as the value of the premises remaining bears
to the total value of the premises at the date of condemnation. However, either
Lessor or Lessee may, at its option, terminate this Lease as of the date the
condemnor acquires possession of the Premises or any part of the premises
exceeding 10% of the area initially leased to Lessee. In the event that the
premises are condemned in whole, or the portion condemned is such that the
remainder is not susceptible for use under this Lease, this Lease shall
terminate upon the date upon which the condemnor acquires possession. All sums
which may be payable on account of any condemnation shall belong to the Lessor,
except that Lessee shall be entitled to retain any amount awarded to Lessee for
Lessee's trade fixtures, excess lease costs, or moving expenses.

         20. TRADE FIXTURES: Any and all improvements made to the premises
during the term shall belong to the Lessor, except for trade fixtures of the
Lessee. Lessee may, upon termination, remove all its trade fixtures, but shall
repair or pay for all repairs necessary for damages to the premises occasioned
by removal.

         21. DESTRUCTION OF PREMISES: In the event of a partial destruction of
the premises during the term, from any cause, Lessor shall promptly repair the
damage, provided that the repairs can be made within 60 days under existing
governmental laws and regulations. A partial destruction shall not terminate
this Lease. Lessee shall be entitled to a proportionate reduction of rent while
repairs are being made, based upon the extent to which the repairs shall
interfere with the business of Lessee on the premises. In no event shall Lessor
be obligated under this Lease to expend any sums for repair of the premises in
excess of the amount of the insurance proceeds received by Lessor on account of
the occurrence, which made the repairs necessary. If Lessee is obligated to
carry fire and extended coverage insurance on the premises under Paragraph 3
above, and if the proceeds of the insurance are insufficient to restore or
rebuild the premises, then Lessee shall, upon demand, deposit the deficiency
with Lessor. If the repairs cannot be made within 60 days, this Lease may be
terminated at the option of either party.

         In the event the premises are a part of a Multi-Tenant Building and the
Building is destroyed in excess of 25% of the replacement cost, Lessor may elect
to terminate this Lease whether the premises is injured or not. A total
destruction of the building in which the premises is situated shall terminate
this Lessee.

         22. INSOLVENCY: In the event a receiver is appointed to take over the
business of Lessee, or in the event Lessee makes a general assignment for the
benefit of creditors, or Lessee takes or suffers any action under any insolvency
or bankruptcy act, each shall constitute breach of this Lease by Lessee.

         23. REMEDIES OF OWNER ON DEFAULT: Any material breach of this Lease by
Lessee shall constitute a default and Lessor may, at its option:

             1)       Terminate this Lease and accelerate the full balance of
             the rent payable for the remainder of the term and sue for such
             sums; or

             2)       Re-enter the premises, without terminating this Lease, and
             dispossess Tenant or any other occupant of the premises and remove
             Tenant's effects and relet the same for the account of the Tenant
             for such rent and upon such terms as shall be satisfactory to
             Landlord, crediting the proceeds, first to the costs and expense of
             re-entry, alterations and additions, and the expense of reletting,
             and then to the unpaid rent and the other amounts due during the
             remainder of the term. Tenant shall remain liable to Landlord for
             any unpaid balance. Nothing contained in this Lease shall be deemed
             to limit any other legal or equitable rights or remedies which
             Lessor may have under Michigan law.

         24. ENVIRONMENTAL LAWS; INDEMNIFICATION:

         (a)      Lessee shall comply with the requirements of all applicable
Federal, State and local environmental, health, safety and sanitation laws,
ordinances, codes, rules and regulations and orders of any regulatory and
administrative authority with respect to the premises.

         (b)      The Lessee agrees to indemnify, defend and hold harmless the
Lessor from and against all loss, liability, damage and expense, including costs
associated with administrative and judicial proceedings and attorneys' fees,
suffered or incurred by the Lessor on account of:

                  (i)      the Lessee's failure to comply with any
                           environmental, health, safety or sanitation law,
                           code, ordinance, rule or regulation or any
                           interpretation or order of any regulatory or
                           administrative authority with respect to the
                           premises:

                  (ii)     any release by Lessee of oil or hazardous materials
                           or substances on, upon, into or from the premises;
                           and

                  (iii)    any and all damage to natural resources or real
                           property and/or harm or injury to persons resulting
                           or alleged to have resulted from Lessee's failure to
                           comply and/or Lessee's release of oil or hazardous
                           material or substances.

         25. ATTORNEY'S FEES: In case suit should be brought for recovery of the
premises, or for any sum due under this Lease, or because of any act which may
arise out of the possession of the premises, by either party, the prevailing
party shall be entitled to all costs incurred in connection with the action,
including a reasonable attorney's fee.

         26. WAIVER: No failure of Lessor to enforce any terms of this Lease
shall be deemed to be a waiver.

         27. NOTICES: Any notice which either party may or is required to give,
shall be given by mailing the same, postage prepaid, to Lessee at the premises,
or Lessor at the address shown below, or at such other place as may be
designated by the parties from time to time.

         28. HOLDING OVER: Any holding over after the expiration of this Lease,
with the consent of Lessor, shall be construed as an month-to-month tenancy at a
monthly rental of one and one-half (1 1/2) times the monthly rental installment
applicable to the period immediately prior to expiration of the lease, otherwise
in accordance with the terms of this Lease as applicable.

         29. TIME: Time is of the essence in this Lease.

         30. HEIRS, ASSIGNS, SUCCESSORS: This Lease is binding upon and inures
to the benefit of the heirs, assigns and successors in interest to the parties.
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         31.      LESSOR'S LIABILITY: The term "Lesser," as used in this
paragraph shall mean only the owner of the fee or land contract vendee's
interest in the real property or a Lessee's interest in a ground lease of the
premises. In no event shall the Lessor's liability exceed the fair market value
of the Lessor's Interest in the premises. In the event of any transfer of title
or interest, the Lessor named herein (or the grantor in case of any subsequent
transfers) shall be relieved of all liability related to Lessor's obligations to
be performed after the transfer. Any security deposits in the hands of Lessor or
Grantor at the time of such transfer shall be delivered to Grantee. Lessor's
aforesaid obligations shall be binding upon Lessor's successors and assigns only
during their respective period of ownership.

         32.      ESTOPPEL CERTIFICATE:

                  (a)      Lessee shall at any time upon not less than twenty
         (20) days' prior written notice from Lessor sign, acknowledge and
         deliver to Lessor a statement in writing (1) certifying that this Lease
         is unmodified and in full force and effect (or, it modified, stating
         the nature of the modification and certifying that this Lease, as
         modified, is in full force and effect). (2) the amount of any security
         deposit, and (3) the date to which the rent and other charges and paid
         in advance, if any, and (4) acknowledging that there are not, to
         Lesser's knowledge, any uncured defaults on the part of Lessor, or
         specifying the defaults if any are claimed. Any statement may be
         conclusively relied upon by any prospective purchaser of the Premises
         or lender to Lessor.

                  (b)      At Lessor's option, Lessee's failure to deliver a
         certificate within the time shall be a material breach of this lease or
         shall be conclusive upon Lessee either that (1) this Lessee is in full
         force and effect, without modification except as may be represented by
         Lessor, (2) there are no uncured defaults in Lessor's performance, and
         (3) not more then one months rent has been paid in advance or failure
         may be considered by Lessor as a default by Lessee under this Lease.

                  (c)      If Lessor desires to finance, refinance, or sell the
         premises, or any part of the Premises, Lessee agrees to deliver to any
         lender or purchaser designated by Lessor financial statements of Lessee
         as may be reasonably required by the lender or purchaser, but in no
         greater detail than the financial statements Lessee files with its
         periodic reports to the Securities and Exchange Commission and Lessor
         acknowledges the delivery of Lessee's then current SEC reports will
         satisfy this requirement. The statements shall include the past three
         years financial statements of Lessee. The financial statements shall
         be received by Lessor and the lender or purchaser in confidence and
         shall be used only for the purposes set forth above.

                  (d)      Lessee shall at any time, upon not less than 10 days'
         prior written notice from Lessor, sign, acknowledge and deliver to
         Lessor a non-disturbance and attachment agreement between Lessee and
         any prospective mortgagee of the premises on a form to be supplied by
         the Lessor and reasonably approved by Lessee.

         33.      OUTSIDE STORAGE: Lessee shall not store any personal property
including, but not limited to, inventory, equipment and supplies on Lessor's
property other than the premises without Lessor's prior written consent.

         34.      ENTIRE AGREEMENT: This foregoing constitutes the entire
agreement between the parties and may be modified only by a writing signed by
both parties.

         35.      FINANCING: Landlord intends to finance the acquisition and/or
construction of the premises. Notwithstanding any term or provision hereof to
the contrary, if landlord is unable to obtain the financing, then upon notice to
tenant this Lessee shall be terminated.

         36.      RULES: Lessor may establish and promulgate such rules and
regulations for the management and operation of the building as it may find
necessary and appropriate.

         37.      RENEWAL TERM: Upon the expiration of the term, Lessee shall
have the option to renew the Lease for two (2) additional period(s) of two (2)
years each upon written notice of the exercise of the option not less than one
hundred twenty (120) days from the end of the term or the then applicable
renewal term.

All of the terms and conditions shall apply during the renewal term(s) except
that the annual Base Rent shall increase by the lessor of the Consumer Price
index of two percent (2%) annually. In no event shall the Base Rent be less than
$3.54 per square foot.
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
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         38.      ADDITIONAL PROVISIONS: See the attached Addendum.

LESSEE: Rockford Corporation            LESSOR: 3056 Walker Ridge Drive, L.C.

                                        By: Robert Grooters Development Company
                                            as Managing Agent for Lessor

By: /s/ James M. Thomson                By: /s/ Robert D. Grooters
    ------------------------------          ---------------------------------
                                            Robert D. Grooters

Its: Chief Financial Officer            Its: President

Address: 600 South Rockford Drive       Address: 4633 Patterson Avenue SE
         Tempe, Arizona 85281                    Suite B
                                                 Grand Rapids, MI. 49512

Date: September 26, 2003                Date: September 26, 2003

Phone: (480) 967-3565                   Phone: (616) 778-0033
Fax:   (480) 966-3370                   Fax:   (616) 778-0070

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                                ADDENDUM TO LEASE

The following provisions are made a part of the lease (the "Lease") dated
September 26, 2003 between ROBERT GROOTERS DEVELOPMENT COMPANY, as Managing
Agent for 3056 Walker Ridge Drive, L.C., a Michigan limited liability company,
as Lessor and ROCKFORD CORPORATION as Lessee for a portion of the building to be
constructed at 3056 Walker Ridge Drive, Grand Rapids, Michigan. To the extent of
any inconsistencies between the Lease and this Addendum, the terms of this
Addendum shall prevail.

1.       PREMISES.

The premises shall be constructed per Lessor's Standard Building Features as
described on the attached EXHIBIT B and according to the plans for the building
as described on the attached EXHIBIT C.

In addition, Lessor, at its expense, shall construct the following additional
improvements to the premises subject to the allowances provided to Lessee. Any
cost over the allowances provided by Lessor shall be paid directly by Lessee
within fifteen (15) days of invoice. Lessor shall coordinate and manage the
following improvements in accordance with the plans agreed between Lessor and
Lessee:

         -        Construct 9,000 square feet of office space per Lessor's
                  Standard Office Features attached as EXHIBIT D, at a cost not
                  to exceed $32.00 per square foot.

         -        Construct a 13,000 square foot production room at an allowance
                  not to exceed One Hundred Eighty Three Thousand, One Hundred
                  Twelve and 00/100 Dollars ($183,112.00).

         -        Construct a boom room, a listening room, connectivity,
                  communications lines, and air compressors at an allowance not
                  to exceed One Hundred Three Thousand and 00/100 Dollars
                  ($103,000.00).

In addition, Lessor, at its expense and upon submission of receipts, shall
reimburse Lessee up to One Hundred Thousand and 00/100 Dollars ($100,000,00)
towards moving cost. Moving cost includes a reasonable allocation of the costs
of Lessee's employees in planning and executing the move, in addition to out of
pocket cost. Lessee understands that Lessor is not involved in the move or hook
up of Lessee's equipment.

Lessee's premises shall include the following:

         -        The office area shall have a men's restroom that will include
                  2 stalls, 1 urinal and 1 lavatory and a women's restroom,
                  which will include 3 stalls and 1 lavatory.

         -        The production area shall have a men's restroom that will
                  include 3 stalls, 1 urinal and 1 lavatory and a women's
                  restroom, which will include 4 stalls and 1 lavatory,

         -        The warehouse (Located near breakroom) shall have a men's
                  restroom that will include 3 stalls, 1 urinal and 1 lavatory
                  and a women's restroom, which will include 4 stalls and 1
                  lavatory.

         -        In addition the warehouse shall include 2 uni-sex restrooms,
                  each will include a lavatory and stool.

<PAGE>

         -        The location of such restrooms will be mutually agreed upon by
                  Lessor and Lessee.

         -        Fourteen (14) truck docks and two (2) grade level doors

ADDITIONAL SPACE.

EXPANSION OPTION: Provided Lessee has not been In default and is not then in
default under the terms of this Lease, Lessee shall have the option to expand
(the "Expansion Option") into the adjacent 59,625 square feet (the "Expansion
Space") as identified on the attached EXHIBIT A. Subject to all of the following
conditions:

1.       Lessee shall be granted the Expansion Option through March 31, 2005.
         Lessee shall notify Lessor in writing, sixty days (60), prior to its
         intent to lease any portion of the Expansion Space. Any expansion
         increments must leave Lessor with reasonably marketable space left to
         lease.

2.       The Expansion Space will then be added to the premises and shall expire
         on the Lease expiration date.

3.       Lessee shall accept the Expansion Space in its "as is" condition, which
         shall include the existing improvements within the space, (" As is"
         defined as: clean, mechanically sound, and with no additional
         improvements at Lessor's cost.). Lessor will permit Lessee to undertake
         reasonable improvements at Lessee's expense to integrate the Expansion
         Space with Lessee's existing space.

4.       The Base Rent for the Expansion Space shall be $3.15 per square foot,
         subject to any escalations or increases set forth in this Lease.

5.       Lessee's Proportionate Share defined under Section 3, Additional Rent,
         of this Lease shall be increased to account for the Expansion Space
         along with the Utilities described in Section 16 of the Lease.

RIGHT OF FIRST REFUSAL: Provided Lessee has not exercised the Expansion Option
by April 1, 2005 Lessor shall grant to Lessee a Right of First Refusal on the
Expansion Space. If at any time Lessor has an offer to lease any portion of the
Expansion Space to a third party which offer Lessor intends to accept, Lessor
shall notify Lessee in writing (the Expansion Notice). Lessee shall have twenty
(20) days to either lease the space or provide Lessor with written notice that
it declines to lease the portion of the Expansion Space described in the
Expansion Notice.

If Lessee declines to lease the space described in the Expansion Notice, the
Lease shall no longer be subject to that right with respect to the space
described in the Expansion Notice. In addition if the Expansion Notice is for
all adjacent space and Lessee chooses not to lease the space, then the remaining
Expansion Space shall no longer be subject to the Right of First Refusal.

If Lessee exercises its expansion rights the terms described above under items
#2 through #5 shall apply.

2. TERM. The term of this Lease shall commence upon receipt of the Certificate
Of Occupancy, ("the Commencement Date") estimated to be April 1, 2004 for 75,000
square feet of warehouse space. The term shall expire five (5) years from the
date that Lessee takes occupancy of the entire 149,625 square feet. Occupancy of
the both the warehouse and office space will occur no later than July 1, 2004.
Lessee and Lessor agree to execute an amendment confirming the expiration date
of the lease.

<PAGE>

3. RENT.

RENT INCENTIVE:

Lessee shall receive a rent incentive in the amount of One Hundred Thirty Seven
Thousand, Eight Hundred Twelve Dollars and 50/100 ($137,812.50), (Calculation:
75,000 square feet of warehouse space @ $3.15 per square foot times 7 months.)
The rent incentive will be applied to Lessee's Base Rent April 1, 2004 through
October 31, 2004 in equal monthly Installments of Nineteen Thousand, Six Hundred
Eighty Seven Dollars and 50/100 ($19,687.50)

BASE RENT:

Effective April 1, 2004 Lessee's Base Rent shall commence in monthly
installments of Nineteen Thousand, Six Hundred Eighty Seven Dollars and 50/100
($19,687.50) (75,000 square feet @$3.15 per square foot/12), but shall be
credited according to the Rent Incentive schedule described, above.

Effective July 1, 2004 Lessee's Base Rent on the entire 149,625 square feet
shall commence in the total annual amount of Five Hundred Twenty Nine Thousand,
Six Hundred Seventy Two Dollars and 50/100 ($529,672.50) in monthly instalments
of Forty Four Thousand, One Hundred Thirty Nine Dollars and 30/100 ($44,139,38),
but shall continue to be credited according to the Rent Incentive schedule
described above.

ADDITIONAL RENT:

Lessee's proportionate share of the building operating expenses shall commence
as fellows:

Effective April 1, 2004 Lessee's proportionate share shall be 22.35%

Effective July 1,2004 Lessee's proportionate share shall be 44.60%

The Lessor shall advise Lessee in writing of the estimated amount of Lessee's
share of building operating expenses for each calendar year along with an
explanation of the billing for the property taxes. The property faxes shall be
prorated and collected by the Lessee over a period of time, which allows Lessor
to pay the property taxes by the due date; Lessor will pay the property taxes
when due. The building operating expenses shall Include a management fee
equivalent to three percent (3%) of the Base Rent and shall also include
reasonable expenses in connection with any appeal on the taxable assessment of
the real estate taxes. Lessor shall render to Lessee on a monthly basis during
the term of this Lease a statement showing additional rent payable based on the
operating expense and property tax budgets provided to Lessee. The additional
rent payable under this Lease shall be prorated for any initial or final
fractional month of the term of this Lease. Lessee shall pay the amount shown on
the statement on or before the first day of the month following the day in which
the statements are rendered. The Lessor may adjust its estimate of annual
building operating expenses from time to time during each calendar year. Within
ninety (90) days after the end of each calendar year (including the year in
which this Lease terminates), Lessor shall furnish to Lessee a detailed
accounting of Lessee's share of the actual and final building operating expenses
for the preceding year and showing the amounts of the estimated payments paid by
Lessee on a monthly basis. If the sum of Lessee's monthly payments exceeds
Lessee's share of the actual and final building operating expenses for the year,
Lessor shall refund to Lessee the difference upon delivery of the statement. If
Lessee's share of building operating expenses exceeds the amounts paid by Lessee
on a monthly basis, Lessee shall pay the difference within thirty (30) days
after delivery of the statement.

6. PARKING.

Lessor shall provide Lessee with 180 parting spaces for automobiles as
identified on the attached Exhibit E.

14. POSSESSION.

Lessor shall provide possession of 75,000 square feet of warehouse space to
Lessee by April 1, 2004 - PHASE I (occupancy shall start at the west-end of the
premises) and the remaining 74,625 square feet of space by July 1,2004 - PHASE
II.

If Lessee is able to take early possession of any portion of PHASE II Lessee and
Lessor shall mutually agree upon the commencement of the Base Rent and the
Additional Rent.

<PAGE>

16. UTILITIES.

Upon occupancy, Lessee shall pay 100% of the gas and electric expenses for its
suite.

Lessee's use of water shall be on its own separate meter and placed in
Lessee's name.

38. ADDITIONAL PROVISIONS.

ACKNOWLEDGMENT: Both parties represent and warrant that they have full legal
authority to enter into this agreement and to bind the respective parties to all
of the terms and conditions outlined herein.

BROKER'S COMMISSION: Lessee represents that there is no broker or real estate
salesperson instrumental in consummating this Lease on Lessee's behalf, and that
Lessee had no conversations or conducted any prior negotiations with any broker
or real estate salesperson concerning the renting of the leased premises.

LESSEE:                                LESSOR:

Rockford Corporation                   3056 Walker Ridge Drive, L.C.

                                       By: Robert Grooters Development Company,
                                           as Managing Agent for Lessor

By: /s/ James M. Thomson               By: /s/ Robert D. Grooters
    -----------------------------          ------------------------------------
                                           Robert D. Grooters
Its: Chief Financial Officer           Its: President

Date: September 26, 2003               Date: September 26, 2003
<PAGE>

                                   EXHIBIT A

                       [FLOOR PLAN OF WALKER RIDGE DRIVE]

<PAGE>

                                   EXHIBIT B

                           OWNER'S STANDARD FEATURES
                              WAREHOUSING FACILITY

SITEWORK

         -        Light duty paving 21/2" Asphalt on 8" of 22A gravel and 12" of
                  sand.

         -        Heavy duty paving 3" Asphalt on 12" of 22A gravel and 12" of
                  sand.

         -        Landscaping and lawn irrigation to RGDC standards.

         -        Enclosed storm sewer and roof drain collectors.

         -        Parking lot striping and signage.

CONCRETE

         -        8" thick poured concrete curbwall 4'-0" above finish floor
                  around building perimeter.

         -        5" thick 4000 PSI floor slab with (1) layer of 6" x 6"-#10/10
                  WWF and (1) coat of acrylic cure-n-seal.

         -        8" thick 4000 PSI exterior truck well slabs with (1) layer of
                  6" x 6"-#6/6 WWF and (1) coat of cure-n-seal.

         -        4" exterior sidewalks with (1) layer of 6" x 6"-#10/10 WWF
                  with a broom finish.

STRUCTURAL STEEL/BUILDING

         -        Preegineered building steel with interior 25' x 50' column
                  spacing.

         -        24'-0" wave height (21'-0" clear).

         -        24 ga. Standing seam roof with a galvalume finish (20 year
                  finish warranty).

         -        1/4 on 12 roof pitch.

         -        26 ga. factory finish siding, island white (20 year finish
                  warrunty).

         -        4" R-11 roof and wall insulation with vinyl-scrim-foil facing.

         -        Continuous gutter and down spouts on both side walls.

DOORS

         -        18 ga. 3070 hollow metal doors in 16 ga. frames.

         -        Glass & aluminum doors at suite entrance per plans.

         -        8' x 9' steel insulated dock doors.

         -        9' x 12' steel insulated grade level doors with electric
                  operator.

         -        (1) grade level and (2) dock doors per 30,000 sf.

GLASS AND GLAZING

         -        1" insulated gray tinted, butt glazed, glass in anodized
                  aluminum frames.

         -        Interior frames to be mill finished aluminum, exterior per
                  plans.

<PAGE>

DOCK EQUIPMENT

         -        30,000# 6' x 6' manual dock levelers, with weather seal.

         -        12" x 15" x 6" molded rubber dock bumpers.

         -        40 oz. vinyl dock seals with wear pleats.

PLUMBING

         -        4" underground sanitary sewer service.

         -        2" overhead domestic water service.

FIRE PROTECTION

         -        System designed to provide, 32 "GPM" for the most remote 2,000
                  sf of design area with a maximum of 100 sf per head.

         -        The roof system is designed to allow for 500 "GPM" base
                  allowance and (1) level of in-rack sprinkling

         -        The system is designed to accommodate class IV commodities.

         -        Exterior fire department required.

HVAC

         -        Gas fired air rotation units with fresh air intake louvers to
                  meet BOCA 96:

         -        Each unit is equipped with a zero-loss stack, time clock and
                  night setback.

ELECTRICAL

         -        400 amp 480 w3 phase service separately metered per 50,000
                  sf.

         -        125 amp 120/240v 1 phase sub panel.

         -        110v duplex receptacles spaced per plans.

         -        400 watt metal halide high bay light fixtures spaced to
                  provide 30 fe.

         -        Exit and emergency lights as required.

         -        250 watt high pressure sodium exterior wall pucks, space per
                  plans.

<PAGE>

                                   EXHIBIT C

                                 BUILDING PLANS

<PAGE>

                                    EXHIBIT D

                       Lessor's Standard Office Features

WALLS & CALLINGS

         -        3 5/8" metal studs with 5/8" drywall both sides, to 10' above
                  finish floor

         -        Perimeter, private office, & restroom wall insulated

         -        9'-0" height, 2' x 4' lay-in acoustical ceilings

         -        All walls receive (1) coat of primer & (2) coats of paint

DOORS AND HARDWARE

         -        Hollow metal frames with Hollow metal or solid core oak doors

         -        Flush or half glass doors

         -        ADA compliant locksets & passage sets, closers as required

CABINETS & COUNTER TOPS

         -        60" of base cabinet in white or light oak finish

         -        Single bowl stainless steel sink with fixtures

         -        Laminate counter top, color to be selected

         -        Laminate windowsills, color to selected

FLOOR COVERINGS

         -        Carpet from RGDC standard selections, or 12.50 syd. allowance.

         -        Vinyl composite tile from RGDC standard selections

         -        4" vinyl cover base

         -        Reducer & transitions strips as needed

PLUMBING

         -        ADA compliant tank type fixtures (white)

         -        Wall mounted single bowl lavatories (white)

         -        Hi/Low drinking fountain, as required

         -        Electric hot water heater

HVAC

         -        Electric heat pump and exterior condenser as required

         -        Programmable thermostat

         -        Restroom ventilation fans

ELECTRICAL

         -        110v duplex receptacles place per plans.

         -        2" x 4" junction box for phone/data spaced as required (All
                  wiring & devices by Tenant).

         -        2' x 4' lay-in light fixtures with acrylic lenses.

         -        Emergency & exit lights as required by code.

FIRE PROTECTION

         -        All office space is sprinkled in accordance with state and
                  local building codes.

                                        1

<PAGE>

                                    EXHIBIT K

                            [FLOOR PLAN PARKING FLOW]

<PAGE>

                            FIRST AMENDMENT TO LEASE

This First Amendment dated March __, 2004 to the Lease dated September 26, 2003
is between ROBERT GROOTERS DEVELOPMENT COMPANY, as Managing Agent for 3056
Walker Ridge Drive, L.C. as Lesser and ROCKFORD CORPORATION.

The parties agree that the following Sections of the Lease have been amended as
follows:

1.       SECTION 1. PREMISES:

         Lessee shall lease an additional 13,250 square feet for a total of
         162,875 square feet as identified on the attached Exhibit A. Lessee
         shall take the additional space in its "as is" condition, except that
         Lessor at its cost shall install a metal panel demising wall at the
         west end of the suite to secure the space, as identified on the
         attached Exhibit A.

         Lessee's additional space shall include use of two (2) additional truck
         docks.

         ADDITIONAL SPACE.

         EXPANSION OPTION: Lessee is exercising its expansion option for a
         portion of the space, which is 13,250 square feet. Lessee's expansion
         space has therefore been reduced to 46,375 square feet. All other terms
         in this section of the lease shall remain unchanged.

2.       SECTION 2. TERM: The term of this Amendment shall commence upon receipt
         of the Certificate of Occupancy, ("the Commencement date") estimated to
         be April 1, 2004. The term shall expire five (5) years from the date
         that Lessee takes occupancy of the entire 162,875 square feet. Lessor
         and Lessee agree to execute an amendment confirming the commencement
         and expiration date of the Lease.

3        SECTION 3. RENT:

         RENT INCENTIVE.

         In addition to Rent Incentive described in the Addendum to the Lease.
         Lessee shall receive a rent incentive on the additional 13,250 square
         feet in the amount of Nineteen Thousand, One Hundred Twenty Nine
         Dollars ($19,129.00). The rent incentive shall be applied as follows:

         April 1, 2004 through June 30, 2004, Lessee shall receive three monthly
         rent credits of Three Thousand Four Hundred Seventy Eight Dollars
         ($3,478.00)

         July 1, 2004 through November 30, 2004, Lessee shall receive five
         monthly rent credits of One Thousand Seven Hundred Thirty-Nine Dollars
         ($1,739.00).

         BASE RENT.

         Effective April 1, 2004, Lessee's annual Base rent shall commence in
         monthly installments of Twenty Three Thousand, One Hundred Sixty-Five
         and 63/100 Dollars ($23,165.63), but shall be subject to the Base Rent
         Incentive described above and in the Addendum to the Lease.

         Effective July 1, 2004, Lessee's annual Base Rent shall increase to
         five Hundred Seventy One Thousand, Four Hundred Ten Dollars
         ($571,410.00), with monthly payments of Forty Seven Thousand, Six
         Hundred and Seventeen and 50/100 Dollars ($47,617.50), but shall be
         subject to the Base Rent incentive described above and in the Addendum
         to the Lease.

         ADDITIONAL RENT.

         Effective April 1, 2004, Lessee's proportionate share of the building
         operating expenses shall increase to 26.31% and effective July 1, 2004
         increase to 48.55%.

<PAGE>

4.       SECTION 14. POSSESSION.

         Lessor shall provide possession of 88,250 square feet of warehouse
         space to Lessee by April 1, 2004 - PHASE I (occupancy shall start at
         the west end of the premises) and the remaining 74,625 square feet of
         space by July 1, 2004 - PHASE II.

5.       SECTION 16. UTILITIES.

         Upon occupancy, Lessee shall pay 100% of the gas and electric expense
         for its suite.

6.       SECTION 38. ADDITIONAL PROVISIONS.

         ACKNOWLEDGMENT. Both parties represent and warrant that they have full
         legal authority to enter into this agreement and to bind the respective
         parties to all of the terms and conditions outlined herein.

         All other terms and conditions of the lease remain unchanged and the
         parties ratify the lease as being in full force and effect and without
         default by any party as of the date of this Amendment. To the extent
         that there are inconsistencies in the wording of this Amendment and the
         Lease, the wording in this Amendment shall control.

LESSEE:                               LESSOR:
Rockford Corporation                  3056 Walker Ridge Drive, L.C.

                                      By: Robert Grooters Development Company,
                                          as Managing Agent for Lessor

By: /s/ James M. Thomson              By:
    ---------------------------          ------------------------------
                                           Robert D. Grooters

Its : CFO                             Its: President

Date : MARCH 17, 2004                 Date :
                                            ---------------------------

<PAGE>

                                    EXHIBIT A
                                  1ST AMENDMENT
                                3056 WALKER RIDGE
                                 ROCKFORD CORP.

                    [FLOOR PLAN OF 3056 WALKER RIDGE DRIVE]<PAGE>
                                                                   Exhibit 10.55

                             WAREHOUSE STORAGE AND
                              LOGISTICS AGREEMENT

I.                                 RECITALS

     Whereas, TITAN LOGISTICS, INC., an Oklahoma corporation, with principal
offices located at 1002 East Virginia, Stillwater, Oklahoma, 74074
("TITAN"), is engaged in the business of warehousing and logistical
services including trucking and local transfers; and

     Whereas, TITAN operates a commercial warehouse located at 3324 North Park
Drive, in Stillwater, Oklahoma, ("Warehouse"); and

     Whereas, ROCKFORD CORPORATION, doing business as Audio Innovations, a
corporation, with principal offices located at 600 South Rockford
Drive, Tempe, Arizona, 85281, ("AI"), operates a manufacturing
facility in Stillwater, Oklahoma; and

     Whereas, AI is in need of warehousing and logistical services for the
storage and local transfer of its raw materials and finished products
in furtherance of its manufacturing activities in Stillwater,
Oklahoma;

     Whereas, TITAN has offered and agreed to provide warehousing services and
logistical services to AI in furtherance of its manufacturing activities in
Stillwater, Oklahoma.

II.                             TERMS OF AGREEMENT

     NOW THEREFORE, THE PARTIES HERETO AGREE AS FOLLOWS:

     1. Incorporation of Recitals. The Recitals stated above are hereby
incorporated in their entirety into the body of this Agreement, and are adopted
as terms thereof.

     2. Term Of Agreement/Termination Of Agreement. There shall be an
established term for this Agreement of twenty-four (24) months commencing on
January 1, 2004. Either party herein may terminate this Agreement before the
passing of said twenty-four (24) months upon written notice served as provided
herein of one-hundred and twenty (120) calendar days, ("Notice of
Termination"). Said Notice of Termination may be issued with or without cause,
and will become effective as of the one-hundred and twenty-first (121st.) day
after it is mailed to the other party per the notice provisions below.

                                       1

<PAGE>
     3.   Fees Due TITAN. During the term of this Agreement and in payment for
the various services provided for herein to be provided by TITAN, AI shall pay
to TITAN the sum of $9,967.00 U.S. dollars, per calendar month, said payment is
due to be received by TITAN at its Stillwater, Oklahoma Office described above,
on the First Day of each month. Said payment shall be considered late on the
Fifth day of each month. A late fee of five percent (5%) of the unpaid amount,
shall be assessed if said payment is not received on or before the close of
business on the Fifth day of each month. Any and all transfers as provided for
herein, will be billed separately.

     In addition to the monthly charges provided for herein, AI shall provide
to TITAN at the time of the execution of this Agreement a retention sum of
$9,967.00 U.S. dollars. TITAN shall retain said retention sum to secure AI's
full and timely performance of all of AI's obligations provided for herein
and/or to secure such legal damages as may be suffered by TITAN hereunder.
TITAN may utilize such funds accordingly upon the occurrence of an uncured
breach and/or its suffering of legal damages, without the requirement of Court
intervention or Court order. TITAN shall not be required to hold or segregate
said retention sums in a separate or special bank account, nor shall interest
be required to be paid or accrued regarding the same. At the conclusion of the
term of this Agreement as defined above, and should TITAN hold no claims
against said sums as provided for herein, the same shall be refunded to AI
promptly upon the timely removal of all AI inventory and other personal
property.

     4.   Transfer Services. In consideration of the fees provided for herein,
TITAN shall provide to AI transfer services between AI's two (2) facilities
located in Stillwater, Oklahoma, and the Warehouse. TITAN shall charge a fee of
$50.00 per transfer to the Warehouse. Said fee is a flat fee for each trip
regardless of whether the related trailer or other vehicle used is completely
full or partially full. Said Transfer services will be invoiced monthly on or
about the first day of each month, with terms of net fifteen (15) days from the
date of mailing of the invoice.

     5.   Spot Transfer Services. In consideration of the fees provided for
herein, TITAN shall provide to AI, any movement of Inventory from the TITAN
yard located at 3324 North Park Drive, Stillwater, Oklahoma, to the dock
located at the Warehouse, provided that said spot service shall be limited to
the time frame of 7:00 a.m. to 3:00 p.m., Monday through Friday, with the
exception of normal holidays such as Christmas, New Years Day, and other such
holidays during which time TITAN is not conducting regular business.

                                       2

<PAGE>
     6.   Other Services Provided By TITAN.

          a.   Warehouseman. In consideration of the fees provided for herein,
TITAN shall provide to AI the services of a warehouseman hired and paid by
TITAN, and stationed at the Warehouse, to provide to AI such warehouse and
logistical services as are reasonably required by AI ("Warehouseman"). The
Warehouseman will be an employee of TITAN and all costs of the Warehouseman's
employment will be paid by TITAN. TITAN will provide the Warehouseman's services
to AI without additional charge other than the monthly fee provided in this
Agreement. Such services are to be performed exclusively at the Warehouse
location. Specifically, said Warehouseman shall be reasonably available to AI on
the following schedule:

          Monday through Friday of each week between the hours of 8:00 a.m. and
          4:00 p.m., with the exception of Christmas Day, New Years Day, and
          such Federal Holidays as may be observed by either AI or TITAN.
          ("Normal Business Hours")

     It is the intention of the parties that said Warehouseman provide up to
forty (40) hours of work during each work week during said Normal Business
Hours. Should AI require additional hours over and above the forty (40) hour
time, and/or a modification of the times and/or days worked, TITAN and AI agree
to enter into discussions regarding the same, and to amend the fees to be paid
to TITAN to adequately compensate TITAN for such additional expenses as may be
reasonably incurred to provide such services for AI.

     Should AI desire a temporary modification of the Normal Business Hours
within the confines of the forty (40) hours provided, AI must notify TITAN of
the same in advance, and TITAN shall make reasonable efforts to comply, provided
that, such modification does not require more than eight (8) hours of overtime
or weekend time per incident, and that no more than six (6) such incidents in
the prior twelve (12) months.

     TITAN will comply with all applicable requirements of law relating to the
Warehouseman's employment, including requirements relating to minimum wages,
overtime, tax withholding, worker's compensation coverage, working conditions,
benefits, non-discrimination, and other terms of the Warehouseman's employment.
TITAN will provide primary worker's compensation coverage for the Warehouseman.
In this regard, should a claim arise out of work by the Warehouseman on the
premises of the Warehouse, TITAN shall honor and promptly submit to its worker's
compensation carrier, all claims submitted by its employees in this regard and
shall not take steps to shift the worker's compensation burden to AI in this
regard.

                                       3
<PAGE>

      b. Fork Lift Equipment. TITAN shall provide AI with the use of a
functioning fork lift unit to be used exclusively by the Warehouseman, to assist
AI with the loading and unloading of Inventory. TITAN shall further have
available a second fork lift unit to be used by AI employees. The costs of
normal repairs and maintenance of said fork lifts will be born by TITAN,
provided that, should AI or its employees or agents, cause damage to either fork
lift through negligence, misuse, or abuse, AI will bear the reasonable cost of
repair of the same. Further, TITAN shall provide necessary propane fuel to
operate the two (2) fork lift units described herein.

      c. Shrink Wrap Machine. TITAN shall provide AI with the use of one (1)
shrink wrap machine. AI shall provide the shrink wrap product. Should AI or its
employees or agents, cause damage to either the shrink wrap machine through
negligence, misuse, or abuse, AI will bear the reasonable cost of repair of the
same.

      d. Semi-Tractor. TITAN shall provide AI with the use of a semi-tractor
unit for spot services at the warehouse yard only. Said semi-tractor unit shall
be operated exclusively by TITAN employees or agents, and shall not be removed
from the Warehouse yard.

      e. Drop Yard Usage. TITAN shall provide AI with reasonable but not
exclusive access to and use of a portion of the "drop yard" located to the South
of the Warehouse. TITAN currently uses the "drop yard", and shall permit AI to
share the same on a reasonable basis.

   7. Requirements Of AI.

      a. Supervisor/Lead Person. In order to facilitate the relationship between
the parties as outlined herein and the respective obligations of each party, AI
shall designate a single individual who is knowledgeable of AI warehousing and
shipping operations, and who shall be the single contact person to which TITAN
will communicate with and deal with on a regular basis, ("Lead Person"). Said
Lead Person may be changed by AI upon ten (10) days notice to TITAN. Said Lead
Person shall be responsible for and coordinate with TITAN in all matters
related to this Agreement, including but not limited to the following:

         i.   Access of AI personnel, both during Designated Business Hours and
              at all other times that additional access is permitted herein;

         ii.  Inventory control and all related matters;

                                       4

<PAGE>
                    iii. Dispute avoidance and dispute resolution matters;

                    iv.  Security matters and theft avoidance as to both AI
                         Inventory, and other property stored or used at the
                         Warehouse; and

                    v.   Supervision and management of AI employees working at
                         the warehouse.

                    vi.  Shipping and handling of AI Inventory and products,
                         including proper loading and unloading of the same.

            b.   Fork Lift Operator.  AI shall station a qualified fork lift
operator at the Warehouse to assist AI in carrying out the purposes of this
Agreement. Said fork lift operator shall be under the employ of AI, and shall
be covered by AI's workers compensation insurance as provided by law. Said fork
lift operator shall maintain regular hours at the warehouse in conformity with
the schedule defined above as Normal Business Hours. Said fork lift operator
shall exercise normal care in the operation of the fork lift used so as to
avoid damage to the Warehouse and/or its contents or employees. TITAN reserves
the right to limit or refuse access to said AI employee(s) should TITAN form an
opinion that such person(s) pose a significant risk of harm to the Warehouse or
its contents, and/or a significant risk of theft from the same.

            c.   Supplies And Equipment. AI shall bear the costs of all
necessary supplies and equipment including but not limited to shrink wrap,
operating supplies, computer equipment, telephone equipment, racks, pallets,
office equipment, and all related equipment, and related costs associated with
its operations at the Warehouse.

            d.   Costs of Set Up And Maintenance. AI shall bear all costs
related to set up of its operations related to the Warehouse. Further, AI shall
bear the costs of maintenance of its equipment and related assets used at the
Warehouse during the term of this Agreement.

            e.   Damage To Warehouse & Appurtenances. AI shall bear the
reasonable costs of repair and/or replacement to and of the Warehouse building,
its appurtenances, fixtures, and/or contents caused by the negligence or
intentional conduct of AI, its employees and/or agents, normal wear and tear
excepted. This obligation shall include the repair and/or replacement of
contents of the Warehouse whether owned by AI or owned by another customer of
TITAN.

                                       5
<PAGE>
          f.   Theft Of Contents. AI shall bear the costs of replacement of any
and all contents of the building resulting from a theft of the same, where it is
established in a Court of competent jurisdiction, that such theft was a result
of the intentional conduct of AI, its employees or agents, and/or where it is
established in a Court of competent jurisdiction, that such theft was
facilitated by negligence of AI.

     8.   Permitted AI Inventory. AI shall be entitled to store at the Warehouse
the following categories of personal property:

          a.   Raw Materials including wood or plastic enclosures, and
               miscellaneous parts and products used in the manufacture of audio
               and sound equipment.

          b.   Finished Products, subject to special storage provisions provided
               below, (collectively "Inventory").

     Notwithstanding the foregoing, AI may not store at the Warehouse toxic
chemicals, toxic waste products, toxic materials, or any other items or
materials that may pose a risk of a violation of local, state or federal
environmental laws or regulations of any kind. In this regard, TITAN reserves
the right  to refuse to store any such items that it reasonably believes may
violate the provisions of this paragraph.

     9.   Use Of Warehouse Facility/Access Matters. The Inventory shall be at
all times stored solely within the boundaries of the area of TITAN'S Warehouse
designated in the drawing attached hereto as Exhibit "A", and incorporated
herein by reference, an area comprised of approximately eighteen thousand seven
hundred and fifty (18,750) square feet, ("Designated Area"). The parties
understand and agree that the restrictions related to the Designated Area are
further intended to facilitate greater security for the Inventory, to restrict
access to areas of the Warehouse outside the Designated Area, and to facilitate
the parties' desire to keep the Inventory separate from other property stored
therein. In this regard, a fence or other similar form of divider shall be
installed at AI's expense and prior to AI's use of the Warehouse, and shall
contain at a minimum, the following features:

          a.  Fence Type:           Cyclone Fence

          b.  Height Of Fence:      Six (6) to Eight (8) Feet

          c.  Location Of Fence:    In conformity with the drawing

                                   6
<PAGE>
                attached hereto as Exhibit "A" and incorporated herein by
                reference.

          d.    Security Devices: A locking gate of Twelve (12) feet in width
                shall be installed in conformity with the drawing attached
                hereto as Exhibit "A" and incorporated herein by reference.

     Said locking gate shall be locked at the end of Normal Business Hours, and
shall remain locked at all times outside Normal Business Hours. The Warehouse
shall likewise be locked at the end of Normal Business Hours, and shall not be
entered by AI in the absence of full compliance with the After Hours Access
provisions below. The security system must be armed at all times that the
Warehouse is not in use. Should AI be permitted access to the Warehouse without
the supervision of TITAN staff, AI is solely responsible to assure that upon
AI's departure, the Warehouse is fully locked and secure, and the security
system is properly armed. AI access is at all times limited to the Designated
Area of the Warehouse only.

     In this regard, AI shall be entitled to such access to the Designated Area
of the Warehouse only by designated AI employees who are approved by TITAN
management in advance and in writing. ("Approved Employees"). Initially, TITAN
approves access to the following Approved Employees:

     Name:             Title:
     -----             ------

     MIKE PHARES       Material Manager

     JUSTIN HIGGINS    Distribution Supervisor

     KENNY BROWN       Shipping Clerk

     STEVE FRAZIER     Director of Operations

     Said list of Approved Employees may be amended during the course of this
Agreement per written Amendment signed by the parties hereto, provided that,
TITAN reserves its right to refuse access to any AI employee or agent that TITAN
believes poses a risk to the security of the Warehouse and/or TITAN's business
interests or employees. Upon request, and in conformity with applicable privacy
legislation, AI will promptly provide to TITAN all background information in its
possession regarding any current or proposed Approved Employee of AI. Should
TITAN not  be promptly provided with such information, or should the same be
unavailable for any reason, TITAN may refuse access to the AI employee(s) or
agent(s) in question.

                                       7
<PAGE>
     In addition to the designated warehouse space, and as a further
accommodation to AI, said Approved Employees may utilize the small temporary
office facility located within Designated Area. AI accepts the same as is where
is, and without improvements. AI may further utilize the restroom facilities on
site.

     TITAN reserves hereby full rights of access to all portions of the
Warehouse, including the Designated Area.

     10.  Saturday Access And After Hours Access. AI shall have the same access
described above during the following times:

     a.   All Saturdays except Christmas and New Years Day, when applicable,
between the hours of 8:00 a.m. and 5:00 p.m., central standard time or central
daylight time, as the case may be.

     b.   In the event of an emergency or other urgent situation, AI may
request access to the Warehouse outside of the times designated in this
paragraph, in the manner defined below:

     The current General Manager of AI shall contact either Erik Coca or Danny
Randolph, both Titan officers, and obtain prior permission to access the
Warehouse outside of the time frames set forth above ("After Hours Access").
Such access will not be unreasonably refused, provided that, should such access
be granted by Titan more than Three (3) times during a period of Four (4)
months, Titan reserves the right to charge a service fee of $50.00 for each
additional event to cover the expense of providing such access. In addition,
should security issues arise as a result of such After Hours Access including
but not limited to the theft of Warehouse contents, and/or the failure to keep
the Warehouse locked and the security system armed, TITAN reserves its right to
further limit such access or make other reasonable requirements for access as
it deems necessary.

     11.  Waiver Of Lien Of Warehouseman/No Security Interest Granted.
Notwithstanding Article 7 of the Uniform Commercial Code, as adopted by the
State Of Oklahoma, TITAN hereby waives any security interest or other claim
with respect to AI's personal property located at the Warehouse, including the
Inventory, present and future. TITAN acknowledges that AI has granted a
security interest in the Inventory and other personal property to AI's bank and
agrees not to interfere with the bank's security interest. TITAN will look
directly to AI for payment for its services, including but not limited to
storage, transportation, demurrage, terminal charges, insurance, labor and/or
costs necessary for the preservation of the Inventory, and acknowledges that it
does not have a security interest in any AI property with respect to such
payment for its services.

                                       8
<PAGE>
      TITAN will also secure, and deliver to AI, a waiver from the owner of the
Warehouse of any landlord's lien held by the owner with respect to any AI
property located at the Warehouse.

     12. Insurance Requirements. AI shall provide primary coverage for fire,
casualty, and general liability insurance with regard to all Inventory stored,
handled, transported, or otherwise serviced by TITAN, and with regard to its
operations at the Warehouse, with a minimal coverage limits of $1,000,000 per
each occurrence, and $2,000,000 aggregate. AI shall promptly provide TITAN with
proof(s) of such coverage upon request of TITAN. Should the AI Inventory levels
exceed in value the minimal coverage amounts listed herein, TITAN reserves its
right to require AI to provide such additional insurance as may be reasonably
necessary to cover such additional Inventory levels.

     AI will further provide primary worker's compensation coverage for any and
all AI employees, including the Approved Employees to whom access to the
Warehouse is granted. In this regard, should a claim arise out of work by AI
employees on the premises of the Warehouse, AI shall honor and promptly submit
to its worker's compensation carrier, all meritorious claims submitted by its
employees in this regard, and shall not take steps to shift the worker's
compensation burden to TITAN in this regard.

     TITAN will carry normal and customary fire and casualty insurance regarding
the Warehouse and its contents, however, it is understood that AI will carry the
primary insurance burden regarding the Inventory discussed herein.

     13. Nature Of Agreement. Nothing contained in this Agreement is intended to
create a sub-lease or an assignment of TITAN's premises lease and related rights
with its landlord. Further, this Agreement is not intended to create a
principal/agency relationship, nor is it intended to create a joint venture or
partnership relationship.

     14. Title To Inventory. Title to the Inventory shall remain with AI. AI and
TITAN will cooperate to post appropriate notices at the Warehouse giving notice
of AI's ownership of its property located at the Warehouse and giving further
notice that TITAN does not have any ownership or other right with respect to
AI's property located at the Warehouse.

     15. Option To Increase Space. Subject to the full and timely performance of
all obligations and conditions placed upon AI herein, AI shall have the option
during the term of this Agreement to

                                       9
<PAGE>
increase the space to be utilized within the Warehouse, in accordance with
the following procedures:

          a.   Option Dates shall be July 1, 2004, January 1, 2005, and July 1,
2005 ("Option Dates").

          b.   No later than thirty (30) calendar days in advance of the
applicable Option Date, AI must provide TITAN with a written notice of its
intent to increase the space used. At the point of each Option Date, AI may
increase the space used up to the amount of 3,750 square feet.

          c.   In the event that AI desires to increase the space dedicated to
its use, AI shall promptly cause the enclosure provided for herein to be altered
to include the additional space covered hereby, such that, the additional space
is entirely enclosed and is separated from the remaining space used by TITAN
regarding its other customers.

     16. Breach Of Contract. In the event of a breach of this Agreement, and
should legal action be required as a result thereof, and in addition to the
rights and remedies provided for herein and/or by applicable law, the breaching
party shall be responsible for reasonable attorneys fees, arbitration costs,
mediation costs, and all other costs of litigation.

     17.  Return Of Product Upon Termination. Upon termination of the term of
the Agreement, all product and other assets stored at the Warehouse shall be
promptly removed by AI, and in any event, shall be entirely removed within a
twenty (20) calendar day time frame. After such time, TITAN shall be entitled to
claim reasonable storage and/or handling fees in proportion to the charges
permitted herein.

     18.  Governing Law/Jurisdiction. The proposed Agreement would be governed
and interpreted under the laws of the State Of Oklahoma. Proper venue and
jurisdiction governing any and all disputes and/or litigation between the
parties, shall rest with the District Court of Payne County, State Of Oklahoma.

     19.  Non-Assignability Of Agreement. The rights and obligations hereunder
may not be assigned by either party hereto, in whole or in part, to any third
party, without the express written consent of the non-assigning party.

     20.  Amendments To Agreement. The Agreement may be amended only in
writing, and signed by all parties hereto through their duly authorized person
or persons.

                                       10
<PAGE>
      21. Time Is Of The Essence. Time is of the essence regarding all
conditions and covenants contained herein.

      22. Notices. Any and all notices that may be required hereunder, may be
given as follows:

To TITAN:                           To AI:
--------                            -----
Mr. Erik Coca                       Mr. James Thomson
Titan Logistics, Inc.               Chief Financial Officer/Exec. V.P.
1002 East Virginia                  600 South Rockford Drive
Stillwater, Oklahoma 74074          Tempe, Arizona 85281

   The persons signing below represent and declare that they are the duly
authorized person to execute the foregoing agreement on behalf of the entities
hereto.

                                    Titan Logistics, Inc.

Dated: December 16, 2003.           By: /s/ Erik Coca
                                        -----------------------------
                                        ERIK COCA
                                        President
                                        ("TITAN")

                                    Rockford Corporation

Dated: December 12, 2003.           By: /s/ James Thomson
                                        -----------------------------
                                        JAMES THOMSON
                                        Chief Financial Officer
                                        Executive VP
                                        ("AI")

                                       11

<PAGE>
(Floor Plan)

                                   West Side
----------------------------------------------------------------------------

           Audio Innovations                     Titan Logistics, Inc.

               18750sqft                               11250sqft
----------------------------------------------------------------------------
                                                                            150'

                                      (Gate)

                       Access to Docks
                     Open to both parties

Office        Rest      Dock       Dock
              Room      Door       Door
----------------------------------------------------------------------------
                   Drive             200'
                   Thru
                   Door

                                   EXHIBIT A

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