4
– CIS961 and CIS991
3. FRONT PANEL FEATURES
1. MAIN ASSEMBLY
The loudspeaker is supplied with the drivers, crossovers,
transformer, front baffle, and rear metal can, all assembled
in one unit. Do not disassemble this unit.
. SELECTOR SWITCHES
Two rotary switches allow you to select the different
transformer power taps, or to bypass the transformer. Use
a flat-ended screwdriver to make adjustments.
Turn off power to your amplifier before making any
adjustments.
Power Tap Selector
The loudspeaker can be used in 70 V or 100 V constant-
voltage distributed systems.
For 70 V systems, select power
taps from 16 W, 32 W, 64 W, and
128 W.
For 100 V systems, select power
taps from 32 W, 64 W and 128 W.
Transformer/Direct Selector
In the transformer position, the
loudspeaker uses an internal
transformer with a choice of power
taps. Set this if you are using a
constant voltage amplifier of 70 V
or 100 V.
In the direct position, the
transformer is bypassed, the
power tap selector has no effect,
and the loudspeaker presents an
overall impedance of 8 ohm to a
conventional power amplifier.
3. FRONT GRILLE
The loudspeaker is supplied with the front grille not
attached to the front baffle. It comes with an insulating
backing sheet already attached, to hide the baffle and
driver assembly from view.
4. GRILLE ATTACHMENT FITTINGS
The grille is attached to the
main assembly after the selector
switches have been set to the
desired positions.
screw
lock washer
washer
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