Radio Systems, Inc.
•
601 Heron Drive
•
Logan Twp., New Jersey 08085
(856) 467-8000
•
Fax (856) 467-3044
•
www.studiohub.com
For Assy:
12072
Rev: 10/04
For Assys:
Sum8
Sum4
Rev: 01/05
St Model SUM8 & Model SUM4
4x2 Stereo Audio Mixer Amplifier
In 1a
In 1b
In 2a
In 2b
In 3a
In 3b
In 4a
In 4b
In 1 - RIGHT
In 1 - LEFT
In 2 - RIGHT
In 2 - LEFT
In 3 - RIGHT
In 3 - LEFT
In 4 - RIGHT
In 4 - LEFT
Out 1
Out 2
+/- 15V DC Power
connector for pass-
thru power on dual
Hub, dual DA or dual
Mixer panels
Insert jumper in header to
connect RJ-45 shield to Hub
electrical ground
Note - the same applies to
jumpers for inputs 2, 3, & 4
above
Insert jumpers in both
headers to mono inputs
Note - the same
applies to jumpers for
inputs 2, 3, & 4 above
LED s indicate presence
of +/- 15V DC
Insert jumpers in header
to connect hub electrical
ground to chassis ground
Insert jumper in
header to connect
output RJ-45
connector shield to
Hub electrical ground
Install jumper in upper
header to add input to
output #1.
Install jumper in lower
header to add input to
output #2.
Note - the same
applies to jumpers for
inputs 3, 2, 1 above.
Jumper right and center
pins (on both headers)
to increase input level
sensitivity by +10dB.
Jumper left and center
pins (on both headers)
to increase input level
sensitivity by +20dB
Note - the same
applies to jumpers for
inputs 3, 2, & 1 above.
All stereo A & B inputs
are in parallel
( loop-thru )
Add a second section
of Sum4 here to
create a Sum8
8 input summing
amp (or add any
St board
to create a combo
product.)
bq
