Switching On / Control Function With Led; Input" Connection: Amplifier; 4-Channel Switch - Rainbow Germanium Four Einbauanleitung

Switching On / Control Function with LED

The powering on of the amplifier is indicated by the green LED (5). The amplifier switches on with a time delay of
approximately one second. Uncontrolled motion of the loudspeakers is suppressed by this soft start when switching
on the amplifier.
In the event of severe under impedance (<2Ω), for example, complex load, short-circuit at the loudspeaker outputs,
direct current at the loudspeaker voice coils, or with overload causing too-high temperatures on the heatsink, the
electronic monitor immediately powers the amplifier off. → red LED (6) (= protection).
After the repair of the disturbance the amplifier can be reactivated by repeated on/off switching.
If the powering down of the amplifier was caused by overload and too-high temperature, it will restart itself
automatically after a cooling phase.
Frequent powering off for thermal reasons indicates a poor designation of location, and the amplifier should be
relocated to a well-ventilated area. A persistent indication of trouble suggests that a defect in the equipment is
present. The amplifier should be sent in for repair.
„INPUT" Connection: Amplifier Input
The output signal of the car radio/CD-radio is fed by means of a RCA socket "INPUT" FRONT (13) and "INPUT"
REAR (13) FR/RR (right) and FL/RL (left).
During mono operation of the output stage the „INPUT" sockets (13) must always be fed with a right and a left
signal. The full mono performance is achieved only with simultaneous signal input on the right and left RCA
sockets. When only one mono signal is available, for example, during operation over an active crossover with only
one sub-output, the "INPUT" sockets (13) must be fed with a Y-RCA adaptor.
Caution: Use of different RCA cable lengths could potentially lead to potential differences. A variation in
lengths can cause a ground loop, resulting in unpleasant generator distortion. Do not lay RCA cables
parallel with power cables, in order to prevent distortion couplings.
„LINE OUT": Subsequent Amplifier Output
The unmodified input signal from „LOW INPUT" REAR (13) RR & RL is free at outputs „LINE OUT" (12) RR
(right) and RL (left) and can be used for subsequent amplifiers.

2-/4-channel Switch

By means of the switch „MODE" (11) the amplifier mode can be switched between 2-channel and 4-channel
operation. If the switch "MODE" (11) is set to "4CH" the amplifier behaves like a normal 4 channel amplifier. If
the switch "MODE" (11) is set to "2CH" then the "LOW INPUTS" (13) "FL" and "FR" are wired in parallel to
"RL" and "RR" and using a Y-RCA cable is obsolete. There are still 4 channels available (2 x stereo) but no
FRONT & REAR separation is available anymore.
9
Germanium Four