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INSTALLATION AND OPERATION
Jumpers W1, W2, W3
VOLTAGE SELECTION AND GROUND LIFT
The CS-3X has soldered-in jumpers for volt-
age selection and ground lifting. These Zero
Ohm Resistors are located at the right end of
the board.
J1 and J3 should be installed for 110-120 VAC
operation.
J2 only should be installed for 220-240 VAC
operation.
Remove R32 if needed to lift the circuit ground
from the chassis ground/AC ground. This may
be necessary if your system has ground loops
which can cause hum.
EXTERNAL EQ
If finer control over the Surround Channels EQ
is desired, the CS-3X octave band equalizers
can be bypassed, and 1/3 octave external
equalizers , such as the SMART EQ6-1/3, can
be patched in through the DB25 connector.
The DB25 connector is male.
The pinout is as follows:
Left Wall Send
Pin 25
Rear Wall Send
Pin 23
Right Wall Send
Pin 21
Left Wall Return
Pin 11
Rear Wall Return
Pin 9
Right Wall Return
Pin 7
Ground
Pins 2, 4, 6, 8, 10,
16, 18, 20, 22, 24
To bypass the internal EQ’s, the top cover must
be removed, and Jumpers W1, W2, and W3
must be changed to Pins 2 and 3. Normally,
these jumpers are on Pins 1 and 2 as shipped
from the factory.
