RU-N2N ™
RACK TUNER

Owner’s ManualFeatures������� ��������������

1. POWER - Switches the RU-N2N on-off.
2. INPUT - Use either this jack or the rear panel IN jack {8} toinput your bass signal.
3. MUTE - Disconnects the OUT 2 jack audio output asindicated by the MUTE LED, useful for silent bass tuning.
MUTE can be activated from either the front panel MUTE
button or a MUTE footswitch (optional), but MUTE canonly be deactivated by the same switch that activated it.
4. TUNING LEDs - These 20 LEDs indicate the degree offlatness or sharpness of the played note compared to thedisplayed note {7} in 5 cent intervals. The RU-N2N puts ona “light show” after 1 minute of no input.
5. SWR BADGE - Lights brightly to indicate when the playednote is “in tune” to the displayed note {7}.
6. CALIBRATION MODE and FLAT NOTE DISPLAY Calibration Mode: Adjusts the A4 reference frequency(default 440Hz) from 438Hz to 445Hz. Press and hold
CAL to activate Calibration Mode. While the calibration
frequency is displayed, press CAL repeatedly to change
the reference frequency in 1Hz steps. Calibration Modecancels automatically.
Flat Note Display: Press CAL to display flats, rather thansharps (“Ab” instead of “G#”), as indicated by the LED. Press
CAL again to cancel.

7. NOTE DISPLAY - Indicates the closest note to the playednote (see FLAT NOTE DISPLAY above).
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8. IN - Alternate input jack. This jack is disabled automaticallyif a plug is inserted into the front panel INPUT jack {2}.
9. OUT 1 and OUT 2 - Connect either of these output jacksto your amplifier input: OUT 1 is always active. OUT 2 can����������������
be disabled by the MUTE‑switch {3}.
10. MUTE FOOTSWITCH - Connect a standard latch-type
footswitch to enable remote audio muting, see MUTE{3}. (Mute is active when the footswitch is in the “closed”
position.)
11. MAIN POWER INPUT - Connect the included power cord
to a grounded AC outlet in accordance with the voltage
and frequency ratings specified on the rear panel of yourRU-N2N.
12. MAIN FUSE - Protects the unit from electrical faults.
Replace a blown fuse only with the type specified on therear panel of your RU-N2N.

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Important Safety Instructions∆ This product should only be used with a cart or stand that is recommended by themanufacturer.

T his symbol warns the user of dangerous voltage levels localized within theenclosure.

∆ Maintain at least 6 inches (15.25 cm)of unobstructed air space behind the unit to allow for
proper ventilation and cooling of the unit.

T his symbol advises the user to read all accompanying literature for safe
operation of the unit.

∆ This product may be equipped with a polarized plug (one blade wider than the other). Thisis a safety feature. If you are unable to insert the plug into the outlet, contact an electrician
to replace your obsolete outlet. Do not defeat the safety purpose of this plug.

∆ Read, retain, and follow all instructions. Heed all warnings.

∆ Only connect the power supply cord to an earth grounded AC receptacle in accordancewith the voltage and frequency ratings listed under INPUT POWER on the rear panel of thisproduct.

∆ CAUTION: No user serviceable parts inside, refer servicing to qualified personnel only.
∆ WARNING: To prevent damage, fire or shock hazard, do not expose this unit to rain ormoisture.

∆ Protect the power supply cord from being pinched or abraded.

∆ Do not drip nor splash liquids, nor place liquid filled containers on the unit.

∆ The power supply cord of this product should be unplugged from the outlet when left
unused for a long period of time, or during electrical storms.

∆ Hazardous voltages may be present within the cabinet even when the power switch is off
and the power cord is connected. Therefore, disconnect the power cord from the rear panel
power inlet before servicing. The power inlet must remain readily operable.

∆ Unplug the power supply cord before cleaning the unit exterior (use a damp cloth only).
Wait until the unit is completely dry before reconnecting it to power.

∆ This product should be located away from heat sources such as radiators, heat registers, orother products that produce heat.
∆ This product should be serviced by qualified service personnel when: the power supply
cord or the plug has been damaged; or objects have fallen, or liquid has been spilled onto
the product; or the product has been exposed to rain; or the product does not appear tooperate normally or exhibits a marked change in performance; or the product has been
dropped, or the enclosure damaged.

Specifications
TYPE:

PR 644PART NUMBER:

4485000000 (120V, 60Hz) USA

SCALE:

12 note equal temperament		

RANGE:A0 (27.5Hz)–B7 (3951.06Hz)

PRECISION:±1 cent

CALIBRATION RANGE:

438Hz–455Hz, 1Hz steps (A4 440Hz default)

POWER CONSUMPTION:

27W

FUSE:100V–120V models: T250mAL

220V–240V models: T150mAL

DIMENSIONS:Height: 44mm

Width: 483mm

WEIGHT:

2.5kg

Depth: 190mm

Product specifications are subject to change without notice.

A PRODUCT OF:
SWR MUSICAL INSTRUMENTS CORPORATIONCORONA, CALIFORNIA USASWR® and RU-N2N™ are trademarks of FMIC.
Other trademarks are property of their respective owners.
© 2007 FMIC. All rights reserved.
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