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D-75 / Sep 2004
STUDIO CONTROL MODULE
Studio Control Module
(SC-75)
Module Overview
The SC-75 module is similar to the CR-75 module. The monitor
signal being sent to the studio output follows the source select switch-
ing. This switching is identical to the control room module’s and
includes the console’s four stereo outputs (PGM, AUD, AUX, &
UTIL), and two external stereo line level inputs brought directly into
the module.
The SC-75 module houses a studio monitor circuit, which follows
the source selection switches. This is a stereo output intended for a
remote studio power amp/speaker system.
The SC-75 module has a talkback switch. When the talkback switch
is pressed (it is momentary action), any inputs assigned to the talkback
bus (see pages 3-3) will interrupt the regular monitor signal being sent
to the studio output. The TALKBACK master level control sets the
level of this talkback interrupt signal.
All user wiring to and from the SC-75 module takes place at the
DB-25 multi-pin connectors mounted at the top of the module and
located underneath the hinged meterbridge. There are two connectors:
the left one accepts the two stereo analog external inputs; the right one
handles the studio, studio pre, and mono talkback outputs, and the tally
2 relay. All audio connections are stereo line level analog signals. A
pinout drawing on page 6-5 shows all wiring connections at a glance.
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