Specifications

14
Operational Features (rear panel)
SCA2MR
Mains socket with integrated fuse holder
Socket typ: 230VAC, Euro type.
Fuse: 8AT (slow blow).
SCA4MR
Mains socket: Powercon: 230VAC
Mains Fuse: 15AT (slow blow).
Secondary Fuse: 1AT (slow blow).
System Control Module (SCA2MR / SCA4MR)
The system control modules (SCM modules) are compatible with those used in the
SCA2M power amplifier.
XLR Input / Link CH.A / CH.B
Warning: Both models SCA2MR and SCA4MR feature protection cirtuits against
overvoltage. For proper function and to avoid audible distortion, all power amps which
are connected via XLR input cables must be connected to Mains and must be switched
on.
Shield Lift switch with LED indicator for Input CH.A / CH.B.
Shield Lift active (green LED on) cuts the screen of the incoming signal cable from the
Ground of the Power Amplifier.
In any case, at least one Ground connection (screen) between the signal source
(mixer) and each power amplifier must be connected (all inputs are electronically
balanced).
GND / LIFT Switch
When in „GND“ position, the Earth (Mains) is connected to GND (ground) of the power
amplifier circuit. Humnoise from ground loops may be eliminated by setting the switch
to ‚LIFT‘ position.
Data IN
XLR socket + link for data input from RS485 port. Feature for remote control and remote
operation. (function not activated in software release 1.0 )
Impedance Mode switch with Led indicator (SCA-4MR)
feature to optimize the drain power and the safe operation of the amplifier in connection
with the impedance of the driven loudspeaker(s). Selected mode is shown in the
frontside display [View Mode , Page 1].
In addition, the 4Ω mode is indicated by a yellow Led (on).
In 2Ω mode, the total load connected to each speaker output must not drop under 2Ω.
In 4Ω mode the minimum impedance is 4Ω.
Do not manipulate the impedance mode switch while power amplifier is in use.
Automatic temperature controlled cooling fans
Air flow direction:back to front. Keep airflow free from any kind over covers.