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Commercial Audio Series Mixer-Amplifiers
page 6
Operation Manual
Figure 1.1 Front Panel Controls and Indicators
1 Welcome
1.2 Front Panel Controls and Indicators
A. Input Signal Presence Indicator: Green LED,
one for each input channel, illuminates when input sig-
nal exceeds –40 dBu.
B. Input Volume Controls: Four controls, one per
input. Detented potentiometers with knobs.
C. Master Output Volume Control: Detented poten-
tiometer with knob.
D. Output Signal Presence Indicator: Green LED
illuminates when output signal level exceeds 100 mV (45
dB below full power) from the 4-ohm tap.
E. Clip Indicator: Red LED on output illuminates at
threshold of audible distortion.
F. Power Indicator: Blue LED indicates power on.
G., H. Tone Controls: Bass and Treble non-detented
recessed potentiometer on each input channel. Bass ±10
dB at 100 Hz, Treble ±10 dB at 10 kHz.
I. Power Switch: Pushbutton on-off switch.