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5. Outputs
5.1 POWER OUTPUT
All power outputs are balanced and floating. When factory-shipped, the outputs are pre-configured for the
connection of 100 V loudspeaker systems. Connection is achieved through plugging the supplied 8-pole
socket into the connection strip (19). Switching the output transformer allows to change the output voltage
to 70 V, 50 V or 20 V (see paragraph 8). When set to 20 V, operation of low impedance speakers with a
load of 4 ohms is possible.
Caution During operation it is possible that the outputs of the POWER OUTPUT connector may
conduct dangerous voltage (>34 V in peaks). Therefore, observing applicable safety
regulations is mandatory when connecting and installing loudspeaker lines
(see also paragraph 9.2).
5.2 POWER OUTPUT for the connection of 100 V loudspeaker systems
The use of speaker systems with 100 V matching transformers is recommended to reduce the lack in
performance when the distance between amplifier and speaker systems exceeds 50 m. This method also
offers an easy way to distribute the output power. The total power consumption of the maximum amount
of the connected speakers in the network has to match the amplifier’s overall output capacity of 100 watts
(connection impedance 100 ohms). The connection is accomplished via the 100 V output (19)
(see figure 3).
diagram 3 Connection of 100 V (70 V or 50 V) loudspeaker systems
5.3 POWER OUTPUT for the connection of low-impedance loudspeaker systems
When switching the output to 20 V, low-impedance speaker systems (4-16 ohms) can be connected to
the corresponding output (see diagram 4). Because of line attenuation, the distance between amplifier
and speaker systems should not exceed 50 m. It is of further importance that the overall impedance of
the speakers does not decline 4 ohms and that the individual power handling capacity of each speaker
is not exceeded.
diagram 4 Connection of low-impedance loudspeaker systems
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