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Peavey CS 1200X User Manual

Page 10

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OPERATION
The

is designed for maximum ease and flexibility of operation. When the unit is

installed and connected as described in the previous sections, operation is as simple as turning on

the mains switch

turning up the sensitivity controls (4) to the full clockwise setting, and then

adjusting the associated mixer or pre-amplification equipment to supply the necessary signal
levels to provide the desired output level or until the front panel

active LED indicator

shows that the amplifier is compressing. Further increases in signal levels beyond this point will

not produce any significant increase in output and may cause distortion problems.

MODES OF OPERATION

1. STEREO MODE (UNBALANCED INPUTS)

The CS 1200X is shipped from the factory with jumper plugs inserted in the transformer 12) and
crossover (14) accessory sockets. These jumper plugs are necessary if

con-

nectors (11) are to be used as inputs for each channel. As indicated in Diagram the XLR
connectors are wired in an unbalanced configuration (pins 1 and 2 are ground: pin 3 is input).

The unbalanced-input configuration is acceptable whenever relatively short cable runs are em-
ployed, or when the associated mixer used has a full transformer-balanced output.

circumstances, this configuration will usually provide adequate hum and

for most environments. Notice that the jumper plugs in the crossover accessory

arc

required to complete the signal patch to the respective power

inputs 17). If‘ the normal

unbalanced

power amp input jacks are used instead, the jumper plugs are not necessary. It is

suggested, however, that they be left in their respective sockets for possible later usage. As with
all Peavey amplifiers, the CS 1200X has two power amp input jacks per channel

which

offer considerable flexibility in hook-up possibilities. For monaural operation, the same signal is
applied to both channels; the mixer output is plugged in one of the parallel input jacks in

the channels, and a short shielded jumper cable is connected between the remaining input jack
that channel to one of the parallel input jacks on the other channel. This technique is called
daisy-chaining, and can be repeated many times to patch to additional amplifier channels requir-
ing the same signal feed.

PATCH PANEL (STEREO

WITH JUMPERS

TRANSFORMER

LOW Z INPUT

CHANNEL

2 GROUND

3 POSITIVE

SENSITIVITY

SENSITIVITY

TRANSFORMER

CHANNEL

2

GROUND

3

X-OVER

BRIDGE

STEREO

11