FRONT PANEL DESCRIPTION
1. MASTER OUTPUT METERS.
These LEDs illuminate at the levels indicated.
They track ouput level of each channel only.Calibration: “0dB” LED = Peak equivalent
for +4dBu balanced output level.
2. INPUT 1 OVERLOAD INDICATOR.
This red LED illuminates when the input
amplifier approaches a level of 4dB below clipping.
3. INPUT 1 LEVEL CONTROL.
This rotary control sets the output level of the Mic/
Line 1 input stage. It is used to set the relative balance between this input and all others
including the Bus inputs.
4. ASSIGN SWITCH.
This three position slide switch sends the output of the Input 1
stage to Channel A only, both A & B, or Channel B only.
5. INPUT 1 TRIM CONTROL.
This knob is used to set the gain of the input ampli-
fier to accomodate a broad range of microphone sensitivities or line levels.
6. PHANTOM POWER SWITCH.
When in the ON position, Phantom Power
(15VDC) is applied to pins 2 and 3 of the 3-pin INPUT connector on the rear panel. This
voltage level is adequate to operate all but the most esoteric microphone types.
7. DUCKER SENSITIVITY CONTROL AND INDICATOR.
This rotary screw-
driver control sets the level at which a signal applied to Input 1 causes all other inputs to
be attenuated. The adjacent LED illuminates when this action takes place.
8. DUCKER ON/OFF SWITCH.
In the OFF position, you may ignore items 7 and 9
on this page.
9. DUCKER DEPTH CHARGE.
This rotary screwdriver adjustment sets the amount
of attenuation imposed on all audio in the module by the priority circuitry described in
great detail elsewhere in this document.
10. LINE 2 A & B INPUT CONTROLS.
This concentric rotary control adjusts the
input levels of the LINE 2 INPUT.
11. AUX A AND B BUS LEVEL CONTROLS.
These rotary level controls set the
amount of signal going out on the AUX BUS OUTS/LOOPS jacks (tips).
12. DUAL / MIX SWITCH.
In the Dual (stereo) mode, Aux A is routed to Master A
only, Aux B mixes with Master B only. In the Mix (mono) position, both Aux inputs sum
with both Master A and B outputs.
13. MASTER A AND B OUTPUT LEVEL CONTROLS.
These concentric level
controls set the output levels of Master A and B channels. If rotated individually they
serve the function of both output faders and pan controls.
14. STEREO / MONO SELECTOR SWITCH.
In the STEREO mode, Master A and
B outputs are totally independent. In the MONO mode, A and B are summed and identi-
cal.
15. POWER INDICATOR.
Indicates power, as indicated.
