Quick Start Guide: Bridge-Mono Wiring - Crown I-T4000 Operation Manual

I-Tech Series Power Amplifiers
Quick-Start Guide: Bridge-Mono Wiring
Let's assume that you unpacked and installed your amplifier with the proper cooling. If not,
see Section 2 in this manual. We'll also assume that you will operate the amplifier in
Bridge-Mono. Basically you will turn on the amp, enable Bridge-Mono mode with the LCD
Control Screen, turn off the amp, wire it, and turn it back on.
1.
Be sure that no cables are connected to the amplifier. Plug the amplifier power cord
into the amplifier, then into an AC outlet.
2.
Turn on the amplifier power switch on the front panel. The LCD Control Screen will
light up (Figure A.4).
3.
Under the LCD Control Screen, press the Menu/Exit button. Press the Next button
until you see Output Mode on the screen.
4.
Turn either Encoder knob to select BRIDGE MONO. Press the knob to confirm your
choice. Press the Menu/Exit button. Turn down (CCW) both Level controls (Encoders)
until you reach maximum attenuation.
5.
IMPORTANT: Turn off the amplifier. Unplug its power cord from the AC
outlet. The amplifier must be grounded when plugged into AC power.
6.
See Figure A.5. Connect a cable from your mixer output to the amplifier's Channel-1
XLR input connector.
7.
Using Class 1 wiring, connect the speaker cable either to the amplifier's top Speakon
connector (terminals 1+ and 2+, Figure A.6) or across the red binding posts of both chan-
nels (Figure A.5). Do not use the black binding posts in bridge-mono mode.
8.
Plug the amplifier's power cord into the amplifier, then into an AC outlet. Turn on the
front-panel power switch.
9.
Play a program through your mixer. Set its level to peak at 0 dB or 0 VU maximum on
the mixer meters. Gradually turn up (CW) the amplifier's Encoder-1 knob (Level control)
until you reach the desired volume (Figure A.4). Encoder-2 has no effect in Bridge-Mono
mode.
Operation Manual
Figure A.5 Rear Panel Connections
for Bridge-Mono Wiring
CAUTION – SHOCK HAZARD:
Potentially lethal voltages exist at
the output connectors when the
amplifier is turned on and is pass-
ing a signal.
Figure A.4
The LCD Control Screen
Figure A.6
Wiring a Speaker to the Top
Speakon Connector for
Bridge-Mono Operation
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