Studio Technologies 68A 2005 User Manual
Page 11
Model 68A/69A User Guide
Issue 2, January 2005
Studio Technologies, Inc.
Page 11
for Surround
25-pin D-sub plug (male) on one end and
the desired connectors on the other end,
are necessary. 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 connect-
ing 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 –
Surround 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 –12 dBV to
+6 dBu. A 15-turn trim potentiometer is
associated with each input, allowing the
input sensitivity to be adjusted to match
the source’s level. The confi guration sec-
tion 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