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Owner’s Manual
TSD-MIX31RL
3x1 Mic/Line Mixer
AtlasSound.com – 3 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
Front Panel Description
1. Inputs Level Controls 1 and 2 - Independently adjust the gain of the input 1 and 2 input signals.
Turn clockwise to increase the signal level and counter-clockwise to decrease it. Note: The Input
Level Control knobs can be removed and replaced with a supplied security cover to prevent
unauthorized adjustment.
2. Input Level Conrol 3 - Adjusts the gain of the input level of the input 3 stereo RCA inputs. Turn
clockwise to increase the signal level and counter-clockwise to decrease it. Note: The Input Level
Control knobs can be removed and replaced with a supplied security cover to prevent
unauthorized adjustment.
3. Power LED - Illuminates Blue when 24VDC is present.
4. Input Peak LED - Illuminates Red when the input signal reaches 3dBV below when signal clipping
will occur. Occasional flashing is normal but if this indicator is continuously On, then reduce the
input level using the input level control on the front panel.
5. Signal LED - Illuminates Green when the input signal strength reaches 25mV to verify a signal path.
Note: The LED will not illuminate if the input level is turned Off.
6. Limiter LED - Adjustment of the Limiter feature should be done after the input gain(s) have been
properly set. Each Input should be adjusted so the Input Peak LED flashes on signal peaks and
then the Output Limiter control can be set so this LED flashes to indicate that the limiter circuit is
active.
7. Bracket Retainer Points - Each TSD includes two mounting brackets for securing the TSD to a
cabinet or wall. Remove screws and align the bracket with the panel hole before firmly tightening
the screws.
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