Electro-Voice P1200 - Rear Panel Controls and Outputs; Power Amplifier Output Connectors; Bridged Mode Selector; Groundlift Switch

REAR PANEL
7
POWER AMPLIFIER OUTPUT CONNECTORS
SPEAKON output connectors are provided for the
power amplier channels A (left) and B (right).The
Bridged Out connector for bridged operation is sealed
with a plastic cover to prevent connection errors.
WARNING: Please make sure not to hook Speakers
up to the BRIDGED OUTput in NORMAL mode or
damage will result.
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. d as LOW-frequency ampli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
ampli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 lter attenuates subsonic and high frequency
signals so that the power ampli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
lters.
GROUNDLIFT SWITCH
Hum loops can be avoided with the groundlift switch.
If the power amplier is operated together with
other units in one 19” rack, the switch should be in
GROUNDED position. If the power amplier is used
with units which have different earthing potentials,
the switch should be adjusted to the UNGROUNDED
position.