POWER AMPLIFIER OUTPUT CONNECTORS
SPEAKON output connectors are provided for the power
amplifi er channels A (left) and B (right).
The Bridged Out Connector for bridged operation is sealed
with a plastic cover to prevent connection errors.
LIMITER
The time constant of the built-in limiter to avoid overdriving
is adjustable. Position “SLOW” is the factory preset and this
should also be the normal position.
If the power amplifi er is used as a MID/HI-frequency amplifi er
in active multi-way systems, the limiter switch should be set
to “FAST”.
If the power amplifi er is used as LOW-frequency amplifi er in
active multi-way systems, the limiter switch should be set to
“SLOW”.
BRIDGED MODE
Slide switch to change from Normal Stereo mode to Bridged
mode. In Bridged mode the built-in power amplifi ers operate
in “push- pull” and the double output voltage from channel A
and B appears at the Bridged output connector. The phases of
Channel A and B are in opposite and therefore the individual
channels must not be used as loudspeaker outputs.
HI-LO-CUT FILTER
This fi lter attenuates subsonic and high frequency signals
so that the power amplifi ers are not modulated with these
signals. This switch should normally always be in position ON.
The OFF position is only for applications where an upstream
unit, e.g. a crossover or a equalizer, has integrated HI-Cut and
LO-Cut fi lters.
GROUNDLIFT SWITCH
Hum loops can be avoided with the groundlift switch. If the
power amplifi er is operated together with other units in one
19” rack, the switch should be in GROUNDED position. If
the power amplifi er is used with units which have different
earthing potentials, the switch should be adjusted to the
UNGROUNDED position.
REAR PANEL
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