Inputs
Short cables runs improve the sound quality remarkably. Input cables should be short and direct,
since high frequencies will mostly be absorbed if the cables are unnecessarily long. Besides that
a longer cable may lead to humming and noise problems. If the cable runs are unavoidable, you
should use balanced cables.
Outputs
The high damping factor of your amplifier supplies a clear sound reproduction.
Unnecessarily long and thin cables will influence the damping factor and thus the low frequencies
in a negative way. In order to safeguard good sound quality, the damping factor should lie around
50. The longer a cable has to be the thicker it should be.
Connection To The Mains
The CPA 40 requires a 24V DC power source (mains power supply included). Do not connect the
CPA 40 directly to the mains voltage outlet. If a replacement PSU is required contact your loacal
Prolight dealer.
Operation
After having connected your amplifier to the mains, turn both gain controls counter clockwise to
the
“min”
position. The last product to be switched on is the amplifier.
If you want to switch off the system,
switch off the amplifier first
in order to avoid acoustic
shocks on the speakers.
Problem Chart
PROBLEM
No Power
No Sound
Noise
CAUSE
The power cord is not connected
The power cord of the respective
product is not connected properly or
not at all.
The connection socket or the plug
is dirty.
The input signal is too strong
REMEDY
Check the power cord and any
extension cables
Check the power cord and if the
plugs are properly connected with
the sockets.
Clean the socket and/or the plug.
Reduce the input signal via the
gain control.
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