Crown Audio CH Series Setup, CH and CL Series Power Amplifiers, page, Wire Your System

CH and CL Series Power Amplifiers

2 Setup

2.7 Wire Your System

2.7.1 Models CH1 & CH2 Stereo Mode

See Figure 2.10. In this example, Channel 1 is wired to a 4/8 ohm load and Channel 2 is wired to a 70V load.

Make sure the Mode switch is set to the “Stereo” position. Set the Channel Operation Switch to 4/8 ohms on Channel1, and to 70V on Channel 2.

INPUTS: Connect input wiring for each channel.

OUTPUTS: Maintain proper polarity (+/–) on output connectors.

•Connect Channel 1 positive speaker lead to Channel 1 4/8 ohm output terminal.

•Connect Channel 1 negative speaker lead to Channel 1 negative terminal.

•Connect Channel 2 positive transformer lead to either of Channel 2 70V+ output terminals. (The two 70V screws are in parallel offering more wiring flexi- bility).

•Connect Channel 2 negative transformer lead to Channel 2 negative (–) terminal.

Refer to Section 2.5 for output connector pin assign- ments.

2.7.2Models CH1 & CH2 140V Bridge Mode

See Figure 2.11. In this example, a 140V load is connected in Bridge Mono across the 70V+ termi- nals of Channel 1 and Channel 2. Both Channel Operation Switches are set to 70V. Make sure the Mode switch is set to the “Bridge” position.

NOTE: When operating in Bridge-Mono mode, turn down (full CCW) the level control for Channel 2, as the Channel-1 level control works both channels.

INPUTS: Connect input wiring to Channel 1.

OUTPUTS: Connect positive (+) transformer lead to

Channel 1 70V+ output terminal. Connect negative

(–)transformer lead to Channel 2 70V+ output termi- nal.

Refer to Section 2.5 for output connector pin assign- ments.

8 or 4 ohms

70 V

Figure 2.10 Models CH1 & CH2 Wiring for Stereo Mode

(Shown with No-Touch Cover Removed)

Figure 2.11 Models CH1 & CH2 Wiring for 140V Bridge Mode

(Shown with No-Touch Cover Removed)

Operation Manual page 9