User manual
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 amplier into the rack, please make sure
that there is enough space around the amplier.
Be careful when mounting the amplier 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 amplier supplies a clear sound reproduction. Unnecessarily long
and thin cables used for low impedance (4-16Ω) speakers will inuence 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 amplier 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 pro-
tective mains earth to be connected at all times. DO NOT remove or disconnect the earth.
Power On/Off Procedure
After connecting your amplier 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 amplier ON. The last product to be switched on is the amplier.
If you wish to power off the system, turn the amplier’s master volume control counter
clockwise to the “min” position before switching the amplier 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.
5