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Crest Audio CPX Series - User Manual

Crest Audio CPX Series
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www.crestaudio.com
CPX
Series Power Amplifiers
CPX
TM
4
Operating
M
anual
TEMP
PWR
6
16
20
23
26
29
32
6
16
20 23
26
29
32
SIG SIG PWR
CPX 4 POWER AMPLIFIER
GCL
TM
GCL
TM
TM
PWR
ON
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Crest Audio CPX Series Specifications

General IconGeneral
Signal to Noise Ratio>100 dB
InputsXLR, 1/4" TRS
OutputsBinding posts, Speakon
TopologyClass H
Input Impedance20k Ohms
CoolingVariable speed fan
ProtectionThermal, short circuit, DC, overload
Dimensions3.5" (89 mm) x 19" (483 mm) x 15.25" (387 mm)
Power Requirements50/60Hz

Summary

CPX 4 Amplifier Overview

Key Features

Lists core features: GCL, voltage selector, dual fans, crossover, LEDs, and high-pass filter.

Safety and Service Information

Service Information

Details when professional service is needed and provides contact information for repairs.

Installation and Setup Procedures

Operating Precautions

Crucial advice for safe and correct operation of the amplifier.

Cooling Requirements Explained

Explains the forced-air cooling system and necessary air supply.

Front Panel Controls and Indicators

Rear Panel Connections - Part 1

IEC Mains Connector and AC Cord

Describes the standard IEC connector and the AC mains cord requirements.

Line Voltage Selector Switch

Details the switch for selecting primary voltage for the power transformer.

Rear Panel Connections - Part 2

Rear Panel Connections - Part 3

GCL and Bridge Mode Operation

Explains Gain Comparator Limiting and the bridge mode selector switch.

Operation Modes

Bridged Operation Mode

Explains bridging channels for a powerful single-channel monaural output.

Amplifier Protection Features

Speaker Protection and Maintenance

Speaker Protection Guidelines

Advises on preventing speaker damage from power, clipping, and frequencies.

Technical Specifications

Rated Power and Load Impedance

Lists output power ratings for stereo and bridge modes at various impedances.

Specifications - Continued

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