CX-A200 I
NSTALLATION AND OPERATION MANUAL
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Output Details
Binding posts are provided on the rear panel for the four speaker outputs and these can
accommodate flexible leads up to 2.50mm². The output connector is not compatible with
4mm 'Banana' plugs. Do not make any connections to the unit with the power cable
attached. It is good practice to distance the output wiring from the input wiring.
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100V Line operation
The Cloud CXL-400 four channel 100V line module is available as an accessory to the
CX-A200. It is rated at 40 watts per channel and optimally matches the CX-A200 power
amplifier. The module is designed to fit inside the CX-A200 chassis. The CXL-400 can
be operated at full power at frequencies as low as 40Hz without the risk of saturation.
Operation at lower frequencies with high input levels may result in the transformer
saturating and the amplifiers VI limiter operating. The unit can be configured for 70V
operation by means of wire links on the PCB.
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Bridged Mono Operation
The unit can operate in Bridged Mode using any two channels. The inputs must be wired
together by linking the input signal at the XLR connectors of the two relevant channels,
wiring the "second" input out of phase (i.e. pin 1 ground, pin 3 in-phase, pin 2 reverse
phase). The input level controls of the two channels should both to be set to the fully
clockwise position.
The output load should then be connected between the two red binding posts of the
relevant channels (no connection to the black binding posts of the relevant channels),
ensuring that the positive wire is connected to the "first" red binding post and the negative
wire is connected to the "second" binding post.
For example, it is possible to configure four channels as two bridged outputs allowing a
stereo input to be delivered to two 100 watt 8 ohm outputs.
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Status Indicators
The front panel of the CX-A200 has an array of LED's which indicate the status of all four
channels. The lower green LED illuminates when a signal exceeding 500mW is detected,
the yellow 'peak' LED will illuminate when the amplifier output is close to clipping and the
top red LED indicates that the protection relay has disconnected the load. Please note
that it is normal for all four red LED's to illuminate for approximately five seconds when
the unit is switched on, indicating operation of the switch-on delay circuitry. The lower
green LED indicates that the power is switched on.
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VCA Modules
A two channel VCA module is available as a plug-in option and the CX-A200 can be fitted
with two VCA modules. Each VCA module can be supplied with either one or two control
plates. The unit can operate two channels independently or wired to provide stereo
attenuation via one control plate. The remote rotary control plate is compatible with UK
domestic electrical accessories and can be mounted onto a standard British flush or
surface mounted 25mm deep back box. Two core cable with overall screen should be
used to connect the remote level control to the module mounted inside the CX-A200. The
