www.cleveracoustics.co.uk
MA 4120 480W Mixer Amplifier
User Manual
11
Rack installation:
The MA series is 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 occurring 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 on any one output zone.
Installation
