www.cleveracoustics.co.uk
Mixer Amplifier series
User Manual
6
Rack installation
Rack Installation
The MA Series are rack mountable. The rack you use should be a Double Door Rack where you can open the front
and rear panel. When mounting the amplifier into the rack, please make sure that there is enough space around
the amplifier.
Be careful when mounting the amplifier into the rack. Put the heaviest products into the lower part of the rack.
The front panel is not designed to absorb acceleration forces occuring during transportation.
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
used for low impedance (4-16Ω) speakers 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. For longer cable runs please ensure the 100V outputs are used for 100V
speakers.
Connect your speaker systems via the speaker terminals (COM = -VE)
Examples:
1) COM + 4-16Ω
2) COM + 70V
3) COM + 100V
Note: Please do not use more than one pair of output terminals.
Connections To The Mains
Before connecting the amplifier to the local mains voltage outlet should be checked to ensure the available supply
is 240V~AC 50Hz. This product is CLASS1 and requires a protective mains earth to be connected at all times. DO
NOT remove or disconnect the earth.
Power On/Off Procedure
After connecting your amplifier to the mains, turn all controls counter clockwise to the “min”
position. Turn on audio sources (MP3 players, CD players, Microphones etc) before powering the amplifier ON. The
last product to be switched on is the amplifier.
If you wish to power off the system, turn the amplifier’s master volume control counter clockwise to the “min”
position before switching the amplifier OFF before any audio sources are switched off. By following this procedure
it will prevent acoustic shocks to the speakers or potential damage to system components.
