Audio inputs, Audio outputs – Studio Technologies 65 User Manual

Page 11

Model 65 User Guide

Issue 4, January 2004

Studio Technologies, Inc.

Page 11

for Surround

Audio Inputs

The Model 65 provides six audio inputs: five
main and one LFE. These six channels are
designated L, C, R, LS, RS, and LFE.
Audio input signal connections are made by
way of a 25-pin D-sub connector located on
the Model 65’s back panel. One cable
harness, with a 25-pin D-sub plug (male)
on one end and the desired connector or
connectors on the other end, is required.
This cable harness is not supplied by Studio
Technologies. (Note that our friends in some
locations may use the term “loom” instead of
harness.)

The wiring scheme used by the input
D-sub complies with that made familiar by
TASCAM® with their DA-88® product.
A wiring harness prepared for connection
to the six audio input channels is identical to
that of a harness prepared to connect to the
first six channels of a DA-88 input harness.
Please refer to Figure 1 for the connection
details. Note that the Model 65’s D-sub
connector uses 4-40 threads.

Unless there’s a special need, it may be
cost and time effective to utilize a commer-
cially made cable harness. Let the large
market for DA-88-style cabling help you
painlessly install your system!

The Model 65’s input connector is directly
compatible with the monitor output connec-
tions of the Studio Technologies’ Studio-
Comm for Surround Model 68 and Model
68A Central Controllers. The channel layout
arrangements of the two systems are identi-
cal, making interconnection simple.

Each input circuit is electronically balanced
and is intended for connection to balanced
or unbalanced sources with a nominal signal
level of +4dBu. Balanced sources should be

wired so that signal high is connected to +
on the D-sub, signal low to – on the D-sub,
and shield to the D-sub’s shield connection.
With an unbalanced source connect signal
high to the + connection on the D-sub, and
shield to both the – and the shield connec-
tion on the D-sub. If connecting to an unbal-
anced source in this manner results in hum
or noise try connecting signal high to + on
the D-sub, and shield to – on the D-sub;
leave the shield connection on the D-sub
unterminated.

Audio Outputs

The Model 65 provides seven audio out-
puts, designated L, C, R, LS, RS, Sub 1,
and Sub 2. These outputs are intended
for connection to audio amplifiers associ-
ated with monitor loudspeakers, or to the
inputs of loudspeakers with integrated
amplifiers. The outputs are electronically
balanced and capable of driving balanced
or unbalanced loads of 600 ohm or greater.

Channel

–

Shield

LFE

Notes: 1) Connector type on Model 65 is 25-pin

D-sub-miniature female. Installer must
provide plug (male). Connector uses 4-40
threaded inserts for locking with mating plug.

2) Wiring scheme follows Tascam DA-88
convention. Standard DA-88-type wiring
harnesses are directly compatible, with the
exception of 4-40 screw threads being required.

Figure 1. Main Audio Input Connections