Studio Technologies 40 - Manual (Page 4)

Model 40 User Guide Issue 1, July 1994
Studio Technologies, Inc. Page 5
Introduction
The Model 40 Central Controller, along
with related components, are part of the
StudioComm series. StudioComm prod-
ucts provide monitoring and communica-
tions functions for professional audio
applications. The Model 40 Central
Controller, along with up to eight Model 35
or Model 38 Talent Amplifiers, allow the
creation of sophisticated headphone (cue)
systems for use in recording, broadcast,
film, and specialized applications. With a
totally unique, proprietary design, a spe-
cialized, high-quality headphone system
is easily configured and installed.
What This User Guide Covers
This User Guide is designed to assist
you when installing, configuring, and
using the Model 40 Central Controller,
Model 35 Talent Amplifier, and Model 38
Talent Amplifier. It also contains detailed
service information, including block and
schematic diagrams.
System Overview
The underlying concept of a StudioComm
headphone system is distributed amplifica-
tion. The Model 40 Central Controller
provides two stereo line inputs, each
which can be assigned to two output
groups. Each output group distributes line-
level stereo audio and DC power over
standard 3-conductor microphone-type
cables to up to four Model 35 or Model 38
Talent Amplifiers. Two pairs of head-
phones can be connected to each talent
amp. By placing the final output stage in
the talent amplifiers, superior audio quality
can be delivered directly to the user.
The highlight of a StudioComm head-
phone system is the sonic quality; low
distortion, low noise “high fi” audio with an
output level loud enough for “rock ‘n roll.”
The entire audio path is optimized for one
thing: making headphones sound great.
The design and implementation of a
StudioComm headphone system is simple.
Cables terminated with standard 3-pin
XLR-type connectors link the Model 40
Central Controller with the talent amplifi-
ers. For assistance, both input and loop-
through connectors are provided on
each talent amp. For the first time, cable
length simply stops being an issue.
Locating talent amplifiers over 500 feet
(164m) away from a Model 40 is perfectly
acceptable.
Model 40 Central Controller
The Model 40 is the connection point for
the audio inputs, and provides the talent
amplifier outputs which connect to the
talent amplifiers. The unit mounts in one
standard rack space.