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CXM User manual 4

1 CS1 Stereo Music Module

1.01 Input Select Switch

This two position switch is used to select the desired input source. The 'phono'

position, indicated by a green LED, is primarily used for turntable inputs. The 'line'

position, indicated by a yellow LED, is used for all other inputs such as CD players and

tape decks etc. The CS1 module can have two inputs permanently connected.

However, switching between them can be tedious and both inputs cannot be heard at

the same time. It is more common to have a each input device connected to a single

channel.

1.02 Gain Control

This is set to give the required level throughout the mixer. The amount of gain required

depends upon the level of the input signal source. It can easily be correctly adjusted by

first selecting the channel PFL (see section 1.08) and adjusting the gain whilst

observing the PFL LED display on the master module. The display should peak around

the 0dB or +1dB LEDs. The use of excessive gain should be avoided and may result in

distortion.

1.03 Channel Fader

In general, the channel fader should be set to the maximum position when the channel

is operating. This absolute position of the fader is not critical but a situation where the

fader is operated below 50% of its travel should be avoided as this will degrade the

normally excellent signal to noise ratio.

1.04 Crossfade Assign

The crossfade and chopfade controls on the master module can be used to fade or

chop between music signals, which have been assigned to either channel A or channel

With the 'crossfade A' switch depressed, the yellow LED illuminates and the channel is

routed to the crossfade A channel and similarly, 'crossfade B' illuminates the green

LED and routes to the crossfade B channel. Switch 'A' must be released to operate

Switch B. With both switches off, the music signals will bypass the crossfade/chopfade

circuitry.

1.05 Mono Switch

The mono switch is used to mix the left and right stereo channels to form a mono

signal. The red LED illuminates when the mono switch is on.

1.06 BAL - Balance Control

This control is used to trim any stereo imbalance between the left and right channels. It

should be noted that the control will seem to respond like the 'pan' control on the CM1

microphone channel, however with the CS1 module being fully stereo, the balance

control will only increase or reduce the left-channel-verses-right-channel relative

volume levels. The balance control will not assign both stereo signals to one output

channel if rotated to either extreme. If this form of 'mono' routed output is required (eg.

one track playing through the left output only), then the mono button should also be

depressed.

30-08-02 V4.0

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