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Return Talkback Options 1
Overview 1
The 8424 includes a Return Talkback feature that can be used in three
different ways depending on your studio requirements.
The Return Talkback system has its own microphone controls, Gain,
Phantom power and Compressor circuit. The Mic Gain level is controlled
from the RTB GAIN trim controller at the rear of the console. At the factory
this level is set to 40dB but can be adjusted with a small flat head
screwdriver counter clockwise to reduce gain, or clockwise to increase the
Return Talkback Mic Gain.
The Return Talkback system has +48v Phantom power which is accessed
through the services screen under TB>RTB+48V: [Y]
The return talkback system has its own compressor circuit which is activated
from the Services screen under TALK>RTB COMP: [Y] The Threshold of the
compressor can be adjusted with a small flat head screwdriver via the RTB
THR controller at the rear of the console. From the factory, the threshold is
set to 0dB and can be adjusted counter clockwise to reduce the threshold,
or clockwise to raise the threshold.
Once the RTB GAIN and RTB THR are set, adjust the RTB TRIM pot at the
right of the RTB button on the console surface to set the final return
talkback microphone gain levels.
Live room Return Talkback 1
Live room return talkback enables seamless two-way communication
between the studio live room and the studio control room. This function is
particularly useful when not every performer in the live room has a
microphone. With live room return talkback every performer can
communicate effectively with the producer and studio engineer.
The live room Return Talkback microphone must be connected via the RTB
XLR on the rear of the console.
This default Return Talkback mode routes the RTB signal into the M2
Loudspeaker outputs. When the RTB button is pressed and illuminated, the
return talkback signal can be monitored through any loudspeaker system
connected to the M2 LS O/P XLR LEFT & RIGHT outputs at the rear of the
console.
M2 speakers are used to listen to the studio live room independently of the
control room mix on outputs A or M1. If the control room monitor signal is
sent to the M2 speaker set, RTB will be cancelled. RTB can only be activated
if A or M1 is selected as the control room monitor loudspeakers.
RTB must be enabled by switching the RTB system on in the services screen
via TB>RTB ENABLE: [Y].
The RTB switch will only function once this step is completed.
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