Studio Technologies 68A 2001 - Manual (Page 11)

Model 68A/69A User Guide Issue 1, March 2001
Studio Technologies, Inc. Page 11
for Surround
cable harnesses, each with a 25-pin D-sub
plug (male) on one end and the desired
connectors on the other end, are neces-
sary. These cable harnesses are 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 D-subs
comply with that made familiar by
TASCAM® with their DA-88® product.
Wiring harnesses prepared for connecting
to the surround and stereo inputs are
identical to DA-88-style input harnesses.
A wiring harness prepared for the monitor
outputs is identical to that of a DA-88-style
output harness. Please refer to Figures 4,
5, and 6 for the exact connection details.
Note that the Model 68A’s D-sub connec-
tors use 4-40 threads.
Unless there’s a special need, it may be
cost and time effective for you to purchase
commercially made cable harnesses. Let
the large market for DA-88-style cabling
help you painlessly install your system!
Surround and Stereo Inputs
The connectors labeled Input 1–Surround
A & Input 3–Stereo A and Input 2–Sur-
round B & Input 4–Stereo B are used to
interface with the input circuits. Please
refer to Figures 4 and 5 for details on the
exact “pin out” of the D-sub connectors.
Each input circuit is electronically bal-
anced, and is intended for connection to
balanced or unbalanced sources with
nominal signal levels of –12dBV to +6dBu.
A 15-turn trim potentiometer is associated
with each input, allowing the input sensitiv-
ity to be adjusted to match the source’s
level. The configuration section of this
guide provides details on using the trim
pots.
Signal Signal
Connections High (+) Low (–) Shield
SURROUND A-L 24 12 25
SURROUND A-C 10 23 11
SURROUND A-R 21 9 22
SURROUND A-LS 7 20 8
SURROUND A-RS 18 6 19
SURROUND A-LFE 4 17 5
STEREO A-L 15 3 16
STEREO A-R 1 14 2
Notes: 1) Connector type on Model 68A is 25-pin D-subminiature
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 4. Connections for Inputs Surround A
and Stereo A
Signal Signal
Connections High (+) Low (–) Shield
SURROUND B-L 24 12 25
SURROUND B-C 10 23 11
SURROUND B-R 21 9 22
SURROUND B-LS 7 20 8
SURROUND B-RS 18 6 19
SURROUND B-LFE 4 17 5
STEREO B-L 15 3 16
STEREO B-R 1 14 2
Notes: 1) Connector type on Model 68A is 25-pin D-subminiature
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 5. Connections for Inputs Surround B
and Stereo B