CM-680 INSTRUCTION MANUAL Ultra Stereo Labs, Inc.
Pin # Function
1 GND
2 L +
3 N/C
4 GND
5 C +
6 N/C
7 GND
8 R +
9 GND
10 LS -
11 RS -
12 SW -
13 GND
14 L -
15 N/C
16 N/C
17 C -
18 N/C
19 N/C
20 R -
21 N/C
22 GND
23 LS +
24 RS +
25 SW +
Main
Processor
Outputs
N/C
N/C
Bsl -
N/C
Ch +
Bsr -
GND
Rh +
N/C
Ls -
Rs -
Lh -
N/C
N/C
N/C
Bsl +
Ch -
N/C
Bsr +
Rh -
N/C
N/C
Ls +
Rs +
Lh +
Optional
Processor
Outputs
Function
DB-25
Connector Pinout
Setting Monitor and Bargraph Levels:
Set the processor main fader and amplifier levels so the house speakers
are playing back at the normal listening level. Select some source material
like pink noise.
Set the “Processor/Amplifier” switch to “Processor”. With the monitor
volume to “7”, adjust the “Processor” trimpot for a comfortable listening
level. Set the bargraph trimpot for a reading in the middle range.
Set the “Processor/Amplifier” switch to “Amplifier”, adjust the amplifier
trimpot so the level matches the processor level.
Figure 5
CM-680 HD 15 pin outs
Typical per connector
Pin # Name Pin # Name Pin # Name
1 Band A (1), - 6 Chassis Gnd 11 Band B (2), -
Signal Signal
2 NC 7 Band A (1), + Signal 12 NC
3 Band A, Vmon 8 Band B (2), + Signal 13 Band B, Vmon
(Amp returns) (Amp returns)
4 Band A, Imon 9 NC 14 Band B, Imon
5 NC 10 Signal Ground 15 NC
