Crown CH Series User Manual

Operation Manual
CH1
Obtaining Other Language Versions: To obtain information in another language about the use of this product, please contact your
local Crown Distributor. If you need assistance locating your local distributor, please contact Crown at 574-294-8000.
This manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible
situation which may arise during installation, operation or maintenance.
The information provided in this manual was deemed accurate as of the publication date. However, updates to this information may have
occurred.
To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com.
Trademark Notice: Crown, Crown Audio, Amcron, and BCA are registered trademarks of Crown International. Other trademarks are
the property of their respective owners.
Some models may be exported under the name Amcron.
®
©2006 by Crown Audio
®
Inc., 1718 W. Mishawaka Rd., Elkhart, Indiana 46517-9439 U.S.A. Telephone: 574-294-8000
130808-8
1/06
CH and CL Series
CH2
CH4
CL1
CL2
CL4

Crown CH Series Specifications

General

Channels	2
THD	< 0.5%
Input Sensitivity	0.775V or 1.4V
Frequency Response	20Hz-20kHz
Input Impedance	20kΩ
Protection	Short circuit, thermal, and DC protection
Dimensions	19" x 3.5" x 12"

Summary

Important Safety Instructions

Amplifier Setup Procedures

Installation Guidelines

Steps and precautions for installing the amplifier in an equipment rack or other suitable location.

Cooling Requirements

Ensuring proper ventilation and airflow for optimal amplifier performance and longevity.

Input and Output Wiring

Input Wire and Connector Selection

Guidance on selecting and connecting input wires and connectors for balanced/unbalanced signals.

Output Wire and Connector Selection

Proper selection of speaker wire and connectors for output connections.

Switch Settings Configuration

Mode and Operation Switch Settings

Configuration of mode and operation switches for stereo, bridge, 4/8 ohm, and 70V modes.

Wiring Examples: CH1 & CH2

CH1/CH2 Stereo Mode Wiring

CH1/CH2 140V Bridge Mode Wiring

Wiring Examples: CH4

CH4 Stereo Mode Wiring

CH4 Bridge Mode Wiring

Wiring Examples: CL1 & CL2

CL1/CL2 Stereo Mode Wiring

CL1/CL2 Bridge Mode Wiring

Wiring Examples: CL4

CL4 Stereo Mode Wiring

CL4 Bridge Mode Wiring

Connections and Startup

AC Mains Connection

Important safety and connection instructions for the AC power source.

Amplifier Startup Procedure

Step-by-step guide for safely powering on the amplifier for the first time.

Operation Precautions

General Operating Precautions

Essential precautions for safe and optimal amplifier operation.

Operation: Front Panel and Controls

Front Panel Overview

Back Panel Controls (CH1/CH2)

Operation: Indicators and Controls Detail

Indicator Functionality

Control Functions

Principles of Operation (CH/CL Series)

CH1, CH2, CL1, CL2 Signal Path

Principles of Operation (CH4/CL4)

CH4/CL4 Audio Signal Path

Principles of Operation: Power Supply

CH4/CL4 Power Supply Operation

Details on the Power Factor Correction (PFC) and isolation stages in CH4/CL4.

Troubleshooting Guide

Specifications

AC Power Draw and Thermal Dissipation

Service and Support

International and Canada Service

US Service Options

Guidance on service through authorized centers or factory service in the US.

Product Warranty Information