Crown CTs 1200, Operation Manual

Page: 9 / 167

page 9
CTs 2-Channel Power Amplifiers
Operation Manual
3.6 Wire Your System
3.6.1 Dual 8/4/2 Mode
Typical input and output wiring, along with Attenuator
and Mode Switch settings are shown in Figures 3.6 and
3.7. Make sure the Mode switch is set to the “Dual” posi-
tion when operating in Dual mode.
INPUTS: Connect input wiring for each channel. The Y
switch on the rear PIP panel can be used to parallel the
channel inputs when only mono input signals are neces-
sary. The amplifier’s channel outputs are still indepen-
dent.
OUTPUTS: Maintain proper polarity (+/–) on
output connectors.
Connect the Channel 1 speaker’s positive (+) lead to
amplifier Channel 1 positive terminal; repeat for negative
(–). Repeat Channel-2 wiring as for Channel 1. Refer to
Section 3.5 for output connector pin assignments.
3.6.2 Bridge-Mono 16/8/4 Mode
Typical input and output wiring, along with Attenuator
and Mode Switch settings, are shown in Figures 3.8 and
3.9. Make sure the Mode switch is set to the “Mono”
position when operating in Bridge-Mono mode.
INPUTS: Connect input wiring to Channel 1 only.
OUTPUTS: Connect the speaker across the positive ter-
minals of each channel pair. Do not use the negative ter-
minals of the channel pair when the pair is being
operated in Bridge-Mono mode. Refer to Section 3.5 for
output connector pin assignments.
NOTE: Crown provides a reference of wiring pin assign-
ments for commonly used connector types in the Crown
Amplifier Application Guide available at
www.crownaudio.com.
NOTE: When operating in Bridge-Mono mode,
turn down (full CCW) the Input Attenuator for
Channel 2. The Channel-1 Input Atttenuator
works both channels.
See the next page for constant-voltage operation.
Figure 3.7 System Wiring, Dual Mode.
Figure 3.8 Attenuator and Mode-
Switch Settings for Dual Mode
Figure 3.9 System Wiring, Bridge-Mono Mode
Figure 3.10 Attenuator and Mode-
Switch Settings for Bridge-Mono Mode
3 Setup
Always route the input and output wires in
separate bundles.