Introduction, What this user guide covers, System overview – Studio Technologies 55 2005 User Manual
Page 7: System features

Model 55/56 User Guide
Issue 5, August 2005
Studio Technologies, Inc.
Page 7
Introduction
What This User Guide Covers
This User Guide is designed to assist you 
when installing, confi guring, and using 
the Model 55 Central Controller, Model 56 
Control Console, Model 35 Talent Amplifi er, 
and related components.
System Overview
The Model 55 Central Controller, along with 
the companion Model 56 Control Console, 
are members of the StudioComm family 
of products. The Models 55 and 56 are 
specifi cally designed to work in conjunction 
with digital audio workstations to provide a 
full set of monitoring and communications 
functions. Features include control room 
monitoring, meter output, an integrated 
headphone system, dubbing, and communi-
cations functions that include talk to phones 
and slate. All StudioComm functions per-
form to a level that rivals even the largest 
recording consoles. Many of the functions 
are user confi gurable, allowing unmatched 
fl exibility.
A complete StudioComm system consists 
of a rack-mounted central controller, a 
desktop control console, and one or more 
portable talent amplifi er units. The Model 55 
Central Controller and the Model 56 Control 
Console work together, interconnecting 
using a standard 5-pin MIDI-style cable. 
Circuitry in the Model 55 routes any of four 
stereo inputs to the control room, meter, 
headphone, and dub outputs, with com-
mands provided by the Model 56 Control 
Console. The Model 56 Control Console’s 
built-in microphone lets you talk to the 
headphone output. It also allows you to talk 
to the dub output, or to the dub and head-
phone outputs using the slate function.
The Model 35 Talent Amplifi er is a por-
table amplifi er unit capable of driving one 
or two pairs of high-impedance stereo 
headphones. A single microphone-type 
cable links the Model 35 with the Model 55 
Central Controller. The Central Controller 
provides power and left and right audio 
over just three wires.
System Features
Stereo Line Inputs
The Model 55 contains four stereo line-
level inputs which are compatible with both 
balanced and unbalanced signals. Each 
input is independently software confi g-
urable for a nominal input level of –10 dBV 
or +4 dBu. This allows direct connection 
with virtually any audio source. Each input 
can also be confi gured to operate as a 
mono input. In this manner, a signal con- 
nected to the left input is routed to both the 
left and right outputs.
Control Room Monitoring
The control room section provides a stereo 
line-level output for driving a power ampli-
fi er associated with monitor loudspeakers. 
Four buttons are used to select the input 
source to be monitored. Normally, only 
one of the four input sources is selected 
for monitoring. For special applications, 
the system can be confi gured to allow two 
input sources to be simultaneously moni-
tored. The control room level is adjusted 
using a smooth-feeling rotary potentiom-
eter. The Dim button allows the control 
room level to be temporarily reduced. The 
Mono button allows the sum (L+R) of the 
selected source to be sent as the control 
room output.
