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© Seemix Sound AS
TB MIC
An external talkback mic can be connected here. When in-
serted, the in-built talkback mic. is disconnected.
GAIN
TB mic amplifier gain adjustment.
AUX 1-4
AUX master output level potentiometers.
RET 1 AND RET 2
Potentiometers for adjusting Aux. Return levels. The RET1
mono signal may be mixed with each of the 4 Aux buses,
with separate level control for each bus. Alternatively, with
the switch in the RET2 position, the Aux 3 and 4 buses may
befedwiththeReturn2signal.
TB RET
Talkback return level potentiometer. The talkback return sig-
nal is sent to both L and R PFL buses.
TALKBACK BUTTONS
Non-latching talkback pushbuttons. Routes TB signal or
oscillator to respective output(s).
OSC / MIC
Talkback circuits can be fed either from the talkback mic or
from the built-in oscillator.
OSC 1k, 60, 12k
Oscillator frequency selector. 60Hz, 1kHz or 12kHz.
OSC +6, 0dBu
Oscillator level selector. 0 or +6dBu.
OSCONOFF
Switches oscillator on or off.
3.7 Talkback / AUX Master Module TK3800
3. MODULES
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