page 5 – 2
R-55e / July 2004
CONTROL ROOM MODULE
Control Room/Studio
Module
(CRS-55e)
Module Overview
The CRS-55e module is the R-55e console operator’s monitor module.
It allows the operator to listen to the console’s two stereo (PGM & AUD)
outputs, two mono (MONO & PRE) outputs and two external stereo line
level inputs brought directly into the module.
A recessed front panel multi-turn trimpot adjusts talkback level.
The CRS-55e module also houses three console monitor circuits,
which follow the source selection switches. They are:
CONTROL ROOM (CR)—a dedicated output designed to drive a
separate, user provided power amp/speaker system in the main control
room;
STUDIO—a second stereo output intended for a remote (i.e., non CR)
studio power amp/speaker system;
HEADPHONE (HDPN)—an additional output (w/built-in power amp)
that drives the console operator’s headphones. There are two types of
headphone output: the +4dBu balanced output at the module’s right
DB-25 connector (B), and the headphone jack mounted in the right-hand
corner of the console, which is actually the output from a built-in
headphone amplifier.
MONITOR OUTPUT—a monitor source select (without CUE or
MUTE interrupt) independent output.
The CRS-55e module has a talkback switch. When the talkback switch
is pressed (it is momentary action), any microphone assigned to talkback
bus (see page 3-3) will interrupt the regular monitor signals being sent to
the studio.
All user wiring to and from the CRS-55e 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 external 2 source input and handles audio outputs; the right
accepts the external 1 source input and handles audio outputs. All audio
connections are stereo line level analog signals. A pinout drawing on page
5-6 shows all wiring connections at a glance.
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