RU-N2N™
RACK TUNER
Owner’s Manual
Features
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1. POWER - Switches the RU-N2N on-off.
7. NOTE DISPLAY - Indicates the closest note to the played
note (see FLAT NOTE DISPLAY above).
2. INPUT - Use either this jack or the rear panel IN jack {8} to
input your bass signal.
R e a r P a n e l
3. MUTE - Disconnects the OUT 2 jack audio output as
indicated 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 can
only be deactivated by the same switch that activated it.
4. TUNING LEDs - These 20 LEDs indicate the degree of
flatness or sharpness of the played note compared to the
displayed note {7} in 5 cent intervals. The RU-N2N puts on
a “light show” after 1 minute of no input.
8. IN - Alternate input jack. This jack is disabled automatically
if a plug is inserted into the front panel INPUT jack {2}.
9. OUT 1 and OUT 2 - Connect either of these output jacks
to your amplifier input: OUT 1 is always active. OUT 2 can
be disabled by the MUTE-switch {3}.
5. SWR BADGE - Lights brightly to indicate when the played
note is “in tune” to the displayed note {7}.
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.)
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 Mode
cancels automatically.
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 your
RU-N2N.
Flat Note Display: Press CAL to display flats, rather than
12. MAIN FUSE - Protects the unit from electrical faults.
Replace a blown fuse only with the type specified on the
rear panel of your RU-N2N.
b
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sharps (“A ” instead of “G ”), as indicated by the LED. Press
CAL again to cancel.
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