Crown I-T4000 Operation Manual page 12

2 Setup
2.3.5 Bridge-Mono Mode
Overview: Turn on the amp, enable Bridge-Mono mode using 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. Turn on the front-panel
power switch. The LCD Control Screen will light up (Figure 2.8).
2. Under the LCD Control Screen, press the Menu/Exit button. Press the Next
button until you see OUTPUT MODE on the screen.
3. Turn an Encoder knob to select BRIDGE MONO. Press the knob to confirm your
choice. Press Menu/Exit. Turn down both level controls (Encoders) until you reach
maximum attenuation.
4. IMPORTANT: Turn off the amplifier and unplug its power cord.
INPUTS: There are three ways to connect an input signal to the amplifier (Figure 2.9):
• Connect an analog signal source to the Channel-1 amplifier input.
• Connect an AES/EBU digital signal source to the Digital Input IN connector.
• Connect a CobraNet network signal with digital audio to the Network connector
(CN models only).
NOTE: Crown provides a reference of wiring pin assignments for commonly used
connector types in the Crown Amplifier Application Guide available at
www.crownaudio.com.
OUTPUTS: Use Class 1 output wiring. There are two ways to wire the amplifier output
connectors for Bridge-Mono mode:
1) Wire the speaker across the red binding post of each channel (Figure 2.9). Do not
use the black binding posts when operating in Bridge-Mono mode.
2) Wire the speaker only to the top Speakon connector as shown in Table 3 and Fig-
ure 2.10.
page 12
Figure 2.9 Bridge-Mono Wiring to Binding Posts
Figure 2.8
The LCD Control Screen
NOTE: In Bridge-Mono
mode, the Channel 1
Top Speakon Wiring for Bridge-Mono
Level control sets the
level; the Channel 2 Level
control is defeated.
SPK
Table 3
PIN 1+ 2+
R + –
I-Tech Series Power Amplifiers
Figure 2.10
Wiring a Speaker in Bridge-Mono Mode to
the Top Speakon Connector
Operation Manual