Loudspeaker assembly

A loudspeaker having a magnet housing and mounting flange is mounted within an enclosure including an inner member of corrugated fiberboard cut at angles to the corrugations thereof to define hingedly interconnected panels foldable to form a generally prismoidal housing with a speaker opening in one wall and with support panels extending from the bottom of the housing and recessed to receive the speaker magnet housing therein to support same. The walls of the corrugated housing are held in assembled configuration by interlocking tabs and slots and interlocking tongues and recesses, and the speaker mounting flange overlies the outer surface of the one wall and is trapped thereagainst by a face panel of corrugated fiberboard. An outer member of corrugated fiberboard with a decorative outer cover sheet thereon is folded around and adhesively secured to the corrugated housing, the inner and outer fiberboard members and the face panel cooperating to provide each wall of the enclosure with two layers of corrugated fiberboard having corrugations disposed at angles to each other. A perforated grille board is secured to the outer surface of the face panel. The margins of the outer corrugated member are pressed together with the cover sheet to form flattened edges to facilitate insertion of the bottom edges in a flanged baseplate and the top edges in a flanged trim frame encompassing the one wall, the trim frame having integral stakes extending through the grille board to facilitate attachment thereof.

BACKGROUND OF THE INVENTION 
The present invention relates generally to improvements in loudspeaker 
assemblies, and specifically to the provision of an assembly including a 
loudspeaker enclosure having at least two layers of corrugated material in 
each wall. Specifically, this invention relates to improvements in 
loudspeaker assemblies adapted to be fixedly mounted on a support surface, 
such as the rear package shelf of an automobile, a support wall or the 
like. 
Prior loudspeaker assemblies having multi-layered walls of corrugated 
material are shown in U.S. Pat. No. 3,789,953 granted Feb. 5, 1974 to 
Scott F. Everitt and in my copending U.S. application Ser. No. 500,597, 
filed Aug. 26, 1974, entitled "LOUDSPEAKER ASSEMBLY", now U.S. Pat. No. 
3,941,207, and assigned to the assignee of the present invention. While 
such loudspeaker assemblies have been highly effective in terms of 
providing good acoustical properties, and while the loudspeaker assembly 
of the aforementioned application has provided for a more convenient 
manufacture, neither has been readily susceptible to mass production 
methods of providing the cuts or perforations between the several panels 
of each corrugated member. 
Furthermore, such prior loudspeaker assemblies have not been suitable for 
mounting in a moving vehicle such as an automobile which undergoes a 
considerable amount of vibration, bouncing, acceleration and deceleration, 
since the loudspeakers have been supported in the enclosures solely at the 
mounting flange, which arrangement provides undue stress on the mounting 
flange and on the corrugated fiberboard wall to which the flange is 
attached in an environment such as a moving vehicle. Furthermore, such 
prior art loudspeaker assemblies have not provided for ready mounting to a 
support surface. 
SUMMARY OF THE INVENTION 
The present invention provides a loudspeaker assembly wherein the inner 
layers of corrugated material for all the walls are provided as a single 
integral inner member having cuts therein to define hingedly 
interconnected panels, the cuts all being formed at acute angles to the 
direction of the corrugations to facilitate mass production of the inner 
member by die-cutting. 
Another feature of the present invention is a combination of interlocking 
tabs and slots and interlocking tongues and recesses for holding the inner 
corrugated member in its assembled configuration. 
Another feature of this invention is that the inner corrugated member 
includes corrugated panels disposed within the loudspeaker enclosure for 
providing a rest or support for the magnet housing of the loudspeaker, and 
which cooperates with the flange mounting of the loudspeaker to provide a 
secure and rigid support for the loudspeaker at both ends thereof. 
These features are accomplished in the present invention, and it is an 
object of the present invention to accomplish these desired results by 
providing a loudspeaker assembly comprising a loudspeaker, an enclosure 
including a plurality of interconnected walls for accommodating the 
loudspeaker therein, each of the walls including at least two layers of 
corrugated material, one of the walls having an opening therein to 
facilitate the emission of sound waves from the enclosure, the inner 
layers of the walls being formed from a single integral inner corrugated 
member having corrugations extending in a predetermined direction, the 
inner corrugated member having a plurality of cuts partway through the 
thickness thereof and extending in directions at acute angles to the 
predetermined direction respectively to form hinges, the hinges dividing 
the inner corrugated member into a plurality of interconnected panels 
foldable respectively to form the inner layers of the walls, and means 
holding the panels assembled with respect to each other and about the 
loudspeaker. 
It is another object of this invention to provide a loudspeaker assembly 
which includes support means carried within the enclosure and disposed for 
engagement with the magnet housing of the loudspeaker to support the 
loudspeaker in the enclosure. 
In connection with the foregoing object, it is another object of this 
invention to provide a loudspeaker assembly of the type set forth, wherein 
the support means and the inner layers of the walls are all formed from a 
single integral inner corrugated member. 
It is another object of this invention to provide a loudspeaker assembly of 
the type set forth, wherein the loudspeaker has a mounting flange and is 
supported with that flange trapped between the outer surface of the one 
wall and a face panel for securely mounting the flange around the 
periphery of the opening in the one wall. 
Further features of the invention pertain to the particular arrangement of 
the parts of the loudspeaker assembly whereby the above-outlined and 
additional operating features thereof are attained. 
The invention, both as to its organization and method of operation, 
together with further objects and advantages thereof, will best be 
understood by reference to the following specification taken in connection 
with the accompanying drawings.

DESCRIPTION OF THE PREFERRED EMBODIMENT 
Referring now to FIGS. 1 through 4 of the drawings, there is illustrated a 
loudspeaker assembly, generally designated by the numeral 50, including a 
loudspeaker 51 supported within an enclosure 100. The loudspeaker 51 
includes a magnet 52 carried by a generally cylindrical support or housing 
53. Coupled to the magnet housing 53 at the front thereof is a 
frustoconical speaker cone 55 provided at the outer edge thereof with an 
annular radially outwardly extending attachment flange 56. Fixedly secured 
to the attachment flange 56 and extending therearound are spaced-apart 
spacer members 58. 
The enclosure 100 is generally prismoidal in shape, and includes a sloping 
top front wall 101, a sloping top rear wall 102, a front wall 103, a pair 
of opposed side walls 104 and 105 and a bottom wall 106. The enclosure 100 
varies from a true prismoidal shape in that no two of the walls 101 
through 106 are parallel to each other, the side walls 104 and 105 
converging upwardly at a slight angle. 
Referring now also to FIGS. 7 through 9 of the drawings, the enclosure 100 
includes an inner corrugated member 110 and an outer corrugated member 
140, the members 110 and 140 being arranged in folded configurations to 
form the walls 101 through 106, with each of the walls 102 through 106 
having two layers of corrugations. Each of the corrugated members 110 and 
140 is preferably formed of corrugated fiberboard, which includes a pair 
of flat planar parallel liner sheets 107 and 108, spaced apart by and 
adhesively secured to a fluted or corrugated sheet 109 (see FIG. 8). 
The inner corrugated member 110 includes a generally rectangular top front 
panel 111 which has respectively hingedly connected to the top and bottom 
edges thereof a top rear panel 112 and a front panel 113, and has 
respectively hingedly connected to the opposite side edges thereof two 
side panels 114 and 115. Respectively hingedly connected to the side 
panels 114 and 115 at the outer edges thereof are inner bottom panel 
sections 116 and 118, to the outer side edges of which are in turn 
respectively hingedly connected two speaker support panels 117 and 119. 
Hingedly connected to the top rear panel 112 is an outer bottom panel 
section 120 provided along the distal edge thereof with two tongues 121 
separated by a generally keystone-shaped recess or notch 122. Hingedly 
connected to the front panel 113 is an outer bottom panel section 123 
provided with a generally keystone-shaped tongue 124 flanked by a pair of 
recesses or notches 125, the tongue 124 and recesses 125 being 
respectively shaped and arranged for mating and interlocking engagement 
with the recess 122 and tongues 121, as will be described more fully 
hereinafter. 
Formed in the front panel 113 at the hinge connection with the outer bottom 
panel section 123 are two laterally spaced-apart and aligned rectangular 
slots 126, extending generally horizontally in use, while a similar pair 
of slots 127 is formed in the top rear panel 112 at the hinge connection 
with the outer bottom panel section 120. Formed in the front panel section 
113 between the horizontal slots 126 and at the hinge connection with the 
top front panel 111 is a slot 128, which extends substantially vertically 
in use, while a similar but longer slot 129 is formed centrally of the top 
rear panel 112. Formed centrally in the top front panel 111 is a large 
circular speaker opening 130. A small circular conductor hole 131 is 
formed at the hinge connection between the top rear panel 112 and the 
outer bottom panel section 120 between the slots 127, with one-half of the 
conductor hole 131 being formed in the top rear panel 112, and the other 
half thereof being formed in the outer bottom panel secton 120. The rear 
corners of the speaker support panels 117 and 119 are each provided with 
arcuate cutouts or recesses 132 therein adjacent to the hinge connections 
with the inner bottom panel sections 116 and 118. Recesses 133 are formed 
in the end edges of the speaker support panels 117 and 119 and are shaped 
snugly to receive therein the bottom of the loudspeaker magnet housing 53. 
Low knife cuts are formed along the broken lines 134 to form the hinge 
connections between the panels 111 through 120 and 123. The low knife cuts 
134 extend through the outer one of the liner sheets 107 of the corrugated 
material and through the corrugated sheet 109 thereof, but do not go 
through the other liner sheet 108, that uncut liner sheet providing the 
hinge connections between the panels. However, full cuts entirely through 
the corrugated material are made at the lines 135 at the hinge connections 
of the inner bottom panel sections 116 and 118 with the speaker support 
panels 117 and 119, and at the hinge connection of the top front panel 111 
with the top rear panel 112, the full cuts 135 being generally U-shaped 
and joining at the ends thereof adjacent low knife cuts 134 so as to 
provide projections extending outwardly from the periphery of the top 
front panel 111 and the speaker support panels 117 and 119. Respectively 
formed along the front and rear edges of the inner bottom panel sections 
116 and 118 and projecting therefrom are front bottom tabs 136 and rear 
bottom tabs 137. Similarly, respectively formed along the front and rear 
edges of the speaker support panels 117 and 119 and projecting therefrom 
are front support tabs 138 and rear support tabs 139. 
The outer corrugated member 140 includes a generally trapezoidal top rear 
panel 142 having centrally disposed along the bottom edge thereof a 
conductor cutout or recess 141. Hingedly connected to the top rear panel 
142 at one side edge thereof is a side panel 144 having hingedly connected 
thereto at the distal end thereof a generally rectangular front panel 
section 143. Hingedly connected to the top rear panel 142 at the other 
side edge thereof is a side panel 145 having hingedly connected thereto at 
the distal end thereof another front panel section 146. Small arcuate 
cutouts or recesses 147 are respectively formed along the botton edge of 
the outer corrugated member 140 at the hinge connections between the top 
rear panel 142 and the side panels 144 and 145. The hinge connections 
between the panels 142 through 146 are formed by scoring the inner surface 
of the corrugated material to compress it and facilitate folding thereof. 
Also, the top rear panel 142 is scored along a line parallel to the bottom 
edge thereof and spaced a slight distance therefrom to form a bottom flap 
148, for a purpose to be described more fully below. 
The outer surface of the outer corrugated member 140 is covered by a 
decorative outer sheet 154 (see FIGS. 2 through 4 and 12), which may be 
formed of a synthetic organic resin such as polyvinyl chloride resin, and 
which is adhesively secured to the outer surface of the outer corrugated 
member 140. It is a significant feature of the present invention that 
along the peripheral margins of the outer corrugated member 140, the 
corrugated material and the decorative outer sheet 154 are compressed 
together to form flattened edges, as at 149 (FIG. 9), for a purpose to be 
described more fully below. 
Referring now also to FIGS. 13 and 14 of the drawings, in assembling the 
enclosure 100, the inner corrugated member 110 is first folded into the 
assembled configuration thereof. The side panels 114 and 116 are first 
folded up, as indicated by the arrows in FIG. 13, and the inner bottom 
panel sections 116 and 118 are then folded in toward each other until they 
are substantially coplanar, the speaker support panels 117 and 119 being 
folded inwardly toward the top front panel 111 until they are disposed in 
back to back engagement with each other and substantially at right angles 
to the inner bottom panel sections 116 and 118. The top rear panel 112 is 
then folded up, with the tabs 139 on the speaker support panels 117 and 
119 being received in the slot 129. The outer bottom panel section 120 is 
then folded down over the inner bottom panel sections 116 and 118, with 
the tabs 137 being respectively received in the slots 127. In like manner, 
the front panel 113 is folded up, with the tabs 138 of the speaker support 
panels 117 and 119 being received in the slot 128. The outer bottom panel 
section 123 is then folded up over the inner bottom panel sections 116 and 
118, with the tabs 136 being respectively received in the slots 126. 
It will be noted that the speaker support panels 117 and 119 cooperate to 
form a support structure for the loudspeaker 51, the engagement of the 
tabs 138 and 139 respectively in the slots 128 and 129 serving to rigidly 
hold the speaker support panels 117 and 119 in position, it being 
appreciated that the slot 128 is wide enough to receive both of the tabs 
138 and the slot 129 is wide enough to receive both of the tabs 139. The 
inner bottom panel sections 116 and 118 cooperate to form an inner bottom 
panel, while the outer bottom panel sections 120 and 123 cooperate to form 
an outer bottom panel, the inner and outer bottom panels providing the two 
layers of corrugated material for the bottom wall 106 of the enclosure 
100. It will also be understood that the tongues 121 and 124 of the outer 
bottom panel sections 120 and 123 are respectively received in meshing 
engagement with the recesses 125 and 122 to provide a dovetailed 
interlocking arrangement for securely holding the outer bottom panel 
sections 120 and 123 together, and for holding the inner corrugated member 
110 in the assembled configuration thereof. 
Additionally, it will be appreciated that the engagement of the tabs 136, 
137, 138 and 139, respectively, in the slots 126, 127, 128 and 129 
provides a further interlocking arrangement for holding the inner 
corrugated member 110 in its assembled configuration. When thus assembled, 
the inner corrugated member 110 will be resting on the top front panel 11 
thereof and, when viewed from above, will appear as in FIG. 14. 
Next, the inner corrugated member 110 is inverted and set upon the 
enclosure bottom wall 106 and the outer corrugated member 140 is wrapped 
therearound, with the inner surfaces of the panels 142, 144 and 145 being 
respectively disposed in engagement with the outer surfaces of the panels 
112, 114 and 115, and with the front panel sections 143 and 146 disposed 
in coplanar abutting end-to-end relationship with respect to each other, 
with the inner surfaces thereof respectively disposed against the outer 
surface of the front panel 113. Preferably, the outer corrugated member 
140 is adhesively secured to the inner corrugated member 110, with the 
bottom edge of the outer corrugated member 140 disposed substantially 
flush with the outer surface of the outer bottom panel sections 120 and 
123 of the inner corrugated member 110. The height of the panels 142 
through 146 of the outer corrugated member 140 are such that they extend a 
predetermined distance upwardly and forwardly of the top front panel 111 
of the inner corrugated member 110, whereby the latter panel is recessed 
with respect to the outer corrugated member 140. 
The loudspeaker 51 may now be inserted in the enclosure 100 through the 
speaker opening 130 in the top front panel 111. The magnet housing 152 is 
received in the speaker recesses 133 in the speaker support panels 117 and 
119 and rests thereon, with the attachment flange 56 being disposed 
against the front surface of the top front panel 111 in surrounding 
relationship with the speaker opening 130. The conductors from the magnet 
housing 52 are passed through the conductor hole 131 at the back of the 
enclosure 100 at the juncture between the bottom wall 106 and the top rear 
panel 102, this passage of the conductors being facilitated by the 
recesses 132 at the rear ends of the speaker support panels 117 and 119, 
and by the recess 141 in the outer corrugated member 140. Preferably, the 
attachment flange 56 of the loudspeaker 51 is adhesively secured to the 
top front panel 111. 
The loudspeaker assembly 50 also includes a plurality of spacer members 150 
(see FIG. 11), preferably formed of corrugated fiberboard, the spacer 
members being respectively disposed against the outer surface of the top 
front panel 111 at opposite sides of the loudspeaker attachment flange 56, 
the spacer members having concave side edges as at 151 to conform to the 
contour of the loudspeaker attachment flange 56 and being dimensioned 
substantially to occupy the space between the attachment flange 56 and the 
side panels 144 and 145 of the outer corrugated member 140. A number of 
the spacer members 150 are stacked at each side of the attachment flange 
56 to a depth sufficient to bring the outer surfaces of the top ones of 
the spacer members 150 into a plane substantially flush with the tops of 
the loudspeaker spacers 58, the spacer members 150 preferably being 
adhesively secured together, with the bottom ones thereof being adhesively 
secured to the top front panel 111 of the inner corrugated member 110. 
The loudspeaker assembly 50 also includes a rectangular face panel 155 (see 
FIG. 10) having a circular speaker aperture 156 therethrough centrally 
thereof, and preferably being formed of corrugated fiberboard. The face 
panel 155 is dimensioned to be received over the loudspeaker mounting 
flange 56 and the spacer members 150 and to fit snugly within the recess 
formed by the panels of the outer corrugated member 140 so that the outer 
surface of the face panel 155 is substantially flush with the top edges of 
the outer corrugated member 140. The speaker aperture 156 is dimensioned 
and positioned so as to be substantially congruent with the speaker 
opening 130, and the face panel 155 is adhesively secured to the spacer 
members 150 for cooperation therewith and with the top front panel 111 of 
the inner corrugated member 110 firmly to trap the loudspeaker mounting 
flange 56 therebetween effectively to prevent movement of the loudspeaker 
51 within the enclosure 100. 
It is a significant feature of the present invention that the loudspeaker 
51 is mounted in place in the enclosure 100 by a combined mounting 
arrangement including both the trapping of the mounting flange 56 by the 
top front panel 111 and the face panel 155 and the spacer members 150, as 
well as the support of the loudspeaker magnet housing 53 by the 
loudspeaker support panels 117 and 119, whereby the loudspeaker 51 is 
effectively rendered immovable with respect to the enclosure 100. This 
arrangement provides a separate support for the loudspeaker magnet housing 
53, which is the heaviest part of the loudspeaker 51 along both the rear 
and side surfaces thereof. Without this additional support for the magnet 
housing 53, the loudspeaker 51 would be supported solely by the attachment 
between the mounting flange 56 and the top front panel 111, in cantilever 
fashion, as in the prior art loudspeaker assemblies referred to above. 
Such a cantilever mounting of the loudspeaker 51 might result in undue 
strain on the mounting flange 56 and/or the top front panel 111 when the 
loudspeaker assembly 50 is subject to forces such as those experienced 
when the loudspeaker assembly is mounted in a moving vehicle. Thus, the 
unique mounting arrangement of the present invention renders the 
loudspeaker assembly 50 particularly adaptable to use in vehicles, such as 
automobiles and the like. 
The corrugations in each of the corrugated members 110, 140, 150 and 155 
extend in the directions indicated by the arrows 159 in FIGS. 7 and 9 
through 11. It will be noted that each of the low knife cuts 134 and full 
cuts 135 in the inner corrugated member 110 are along lines disposed at an 
acute angle substantially greater than zero degrees to the direction of 
the corrugations. It has been found that making the cuts at angles to the 
corrugations greatly facilitates the use of die-cutting techniques in 
fabricating the inner corrugated member 110, thereby facilitating mass 
production thereof. 
Furthermore, it will be noted that when the corrugated members 110, 140, 
150 and 155 are cut with the direction of the corrugations disposed as 
indicated by the arrows 159, the several panels of the corrugated members 
will be foldable to an assembled configuration wherein each of the walls 
101 through 106 of the enclosure 100 has two layers of corrugations, with 
the corrugations of the inner layer of each wall being crossed with or at 
an angle to the corrugations of the outer layer of that wall. This 
crossed-corrugation arrangement serves to effect cancellation of those 
undesirable sound waves generated within the enclosure 100, which are not 
radiated outwardly through the speaker openings 130 and 156 by the speaker 
diaphragm 55, thereby having a sound-deadening or suppressing effect on 
the undesirable sound waves generated by the rear surface of the speaker 
diaphragm 55. 
Overlying the face panel 155 is a grille board 160 which is provided with a 
plurality of perforations 164 therethrough (see FIG. 5), and which is 
preferably integrally formed from a single piece of plastic material as by 
molding, and is then covered by a fabric grille cloth (not shown), 
adhesively secured to the outer surface of the grille board 160. Extending 
outwardly from the grille board 160 around the entire periphery thereof is 
a mounting flange 163, which may be adhesively secured to the outer 
surface of the face panel 155, the grille board 160 being dimensioned to 
completely cover the face panel 155. 
A trim frame 170, preferably molded of plastic, extends around the entire 
perimeter of the grille board and has a front wall 171 which overlies the 
mounting flange 163 of the grille board 160 and the upper edges of the 
outer corrugated member 140. Integral with the front wall 171 and 
extending downwardly therefrom at the outer edge thereof are a top flange 
172, side flanges 173 and a bottom flange 174, the flanges 172 through 174 
being disposed at angles with respect to the front wall 171 such that they 
respectively lie along the outer surfaces of the panels 142, 144, 145 and 
the panel formed by the panel sections 143 and 146 of the outer corrugated 
member 140, substantially parallel thereto. The trim frame 170 is 
dimensioned so as to fit snugly around the top margins of the outer 
corrugated member 140, the flattened edges 149 thereof serving to 
facilitate reception thereof within the trim frame 170 (see FIG. 12). 
Formed on the inner surface of the trim frame 170 at spaced-apart points 
therealong are positioning lugs 176 against which the mounting flange 163 
of the grille board 160 abuts to center the grille board 160 with respect 
to the trim frame 170 (see FIG. 6). Also formed integrally with the front 
wall 171 of the trim frame 170 and extending downwardly therefrom at 
spaced-apart points therealong are a plurality of stakes 175 which, in 
use, are driven through the mounting flange 163 of the grille board 160. 
The distal ends of the stakes 75 may then be melted as with a hot iron or 
the like to flatten the ends into beads or heads so that the stakes 75 
function like rivets fixedly to secure the grille board 160 to the trim 
frame 170. Preferably, the trim frame 170 is also adhesively secured to 
the outer corrugated member 140 and the grille board mounting flange 163, 
securely to hold the trim frame 170 in place. 
The loudspeaker assembly 50 is also provided with a baseplate 180 (see 
FIGS. 1-4 and 12), which is preferably a solid molded plastic piece and 
includes a substantially trapezoidal flat bottom wall 181 substantially 
congruent with the bottom wall 106 of the enclosure 100. Integral with the 
bottom wall 181 and extending a short distance upwardly therefrom are a 
front wall 182, a rear wall 183 and a pair of opposed side walls 184. The 
rear wall 183 is provided with a slot 185 extending therethrough 
substantially midway between the ends thereof. Respectively extending 
laterally outwardly from the side walls 184 adjacent to the front wall 182 
are two mounting flanges 186, each being provided with two slots 187 
therein for receiving fasteners 188 such as screws, bolts or the like. 
The housing 100, with the loudspeaker 51 mounted therein, is received 
snugly within the baseplate 180, with the rear wall 102 of the enclosure 
100 disposed against the rear wall 103 of the baseplate 180. It will be 
noted that the inner surface of the rear wall 183 of the baseplate 180 is 
disposed substantially perpendicular to the bottom wall 181 thereof, while 
the outer surface of the rear wall 183 is disposed at an angle so as to be 
substantially coplanar with the top rear wall 102 of the enclosure 100 to 
present the appearance of a continuous unbroken outer surface. However, 
the flap 148 at the bottom of the top rear panel 142 of the outer 
corrugated member 140 is foldable to lie flush against the inner surface 
of the rear wall 183 of the baseplate 180 so as to firmly and snugly 
accommodate the enclosure 100 within the baseplate 180, without disturbing 
the clean external appearance of the loudspeaker assembly 50. The sloping 
top rear wall 102 of the enclosure 100 facilitates mounting of the 
loudspeaker assembly on the rear package shelf of an automobile by 
accommodating the sloping rear window of the automobile. Preferably, the 
bottom wall 106 of the enclosure 100 is adhesively secured to the 
baseplate 180 to complete the loudspeaker assembly 50, the rear slot 185 
of the baseplate 180 being disposed in alignment with the recess 141 of 
the outer corrugated member 140 to permit passage of the loudspeaker 
conductor leads from the enclosure 100. 
While the corrugated members 110, 140, 150 and 155 have been illustrated as 
being formed from corrugated fiberboard or paperboard for simplicity and 
economy of fabrication, it will be appreciated that other corrugated 
materials may be used to produce the same sound-deadening effect, as long 
as the adjacent layers of corrugated material have the corrugations 
thereof crossed with respect to each other in substantially all of the 
walls of the enclosure 100. Also, while only one loudspeaker and one 
opening have been shown in the loudspeaker assembly 50, it will be 
appreciated that any desired number of loudspeakers and corresponding 
openings may be provided. 
Furthermore, it will be understood that reflex ports and other openings may 
be used, depending upon the acoustical requirements of a given system. 
Likewise, other decorative sheets 154 may be provided in place of the 
polyvinyl chloride resin sheet illustrated. Thus, it is anticipated that 
such materials as patterned paper or vinyl resins, either supported or 
non-supported, wood veneers, metal, other plastics either flexible or 
rigid, cloths, nonwoven materials, leather, furs, foams, stone veneers, 
various woven or metal fabrics and materials, cork, glass or painted or 
sprayed materials may be used to form the decorative sheet 154 to suit the 
needs and desires of individual customers. 
Furthermore, it will be understood that any desired type of material may be 
used to form the grille board 160, the trim frame 170 and the baseplate 
180. 
From the foregoing, it can be seen that there has been provided a novel and 
improved loudspeaker assembly which affords simplicity and economy of mass 
production, while preserving high acoustical quality. 
In addition, there has been provided a loudspeaker assembly which provides 
support for both the mounting flange and the magnet housing of the 
loudspeaker so as to provide a loudspeaker assembly which is suitable for 
mounting in moving vehicles, without placing undue stress on the 
loudspeaker or the loudspeaker enclosure. 
There has also been provided an improved loudspeaker assembly of the 
character described, which affords a unique arrangement of folded and 
interlocked panels of corrugated material. 
There has also been provided an improved loudspeaker assembly having a base 
frame and a front trim frame, the outer margins of the loudspeaker 
enclosure being compressed and flattened to facilitate assembly thereof 
with the base frame and trim frame. 
While there has been described what is at present considered to be the 
preferred embodiment of the invention, it will be understood that various 
modifications may be made therein, and it is intended to cover in the 
appended claims all such modifications as fall within the true spirit and 
scope of the invention.