Crest Audio CPA600 - User Manual

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description features

TourClass

protection circuits

acl active clip limiting prevents speaker damage by

providing gentle gain reduction at the clipping threshold.

igm instantaneous gain modulation monitors speaker loads to

detect conditions that may overstress output devices, allowing safe

operation into difficult impedances.

autoramp gradually increases gain to the attenuator level-

settings when the amplifier is turned on.

Protection features include: short circuit, dc voltage,

comprehensive thermal management, current in-rush turn-

on/off transient, and sub/ultrasonic input.

The Crest Audio CPA600 professional power amplifier is

designed to achieve unsurpassed sonic performance and long-

term reliability – even when operating under extreme stress

– in touring or fixed installation applications.

Absolute sonic accuracy is the hallmark of every Crest amplifi-

er. Bass is solid and defined to the limits of audibility, with

ample current reserves delivered by an “over-engineered” power

supply and advanced Class

circuitry. Wide-bandwidth out-

put devices assure detailed, transparent high frequency

response. And, thanks to Crest’s exclusive

IGM

circuit, the CA6

will drive 2

Ω

loads safely without compromise in performance.

Construction and Quality Control

The CPA600 is built exclusively in Crest’s own USA manu-

facturing facility, with internal components selected for pre-

mium quality and proven durability. Each modular

subassembly is pre-tested, and the assembled CPA600 receives

a rigorous “hot room” burn-in before thorough final check-

out on precision test equipment.

Crest’s legendary “overbuilt” power supply

toroidal power transformer

latest generation of high-speed, wide-bandwidth output devices

twin tunnel cooling with back-to-front air flow

dual, variable speed DC fans

massive, extruded aluminum heat sinks

balanced XLR and

⁄4-inch (TRS) inputs

five-way binding post outputs or Speakon

™

connectors

(market dependent)

stereo/parallel/bridged mono mode selector switch

ground lift switch

input sensitivity selection

recessed, stepped attenuators

front panel circuit breaker switch

modular construction

five-year warranty*

power specifications 8Ω stereo 4Ω stereo 2Ω stereo 8Ω bridged 4Ω bridged

1kHz, 0.01% THD 400w 600w 750w 1200w 1500w

20Hz-20kHz, 0.1% THD+N 350w 500w 600w 1000w 1200w

Power figures are watts per channel, both channels driven.

CPA600

CPA600 power amplifier

4Ω stereo CPA400 CPA900 CPA1200 CPA1800

1kHz, 0.01% THD+N 435w 900w 1200w 1800w

20Hz-20kHz, 0.1% THD+N 400w 800w 1100w 1700w

power specifications:

other CPA series power amplifiers

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Summary

Power Specifications

TourClass Protection Circuits

Active Clip Limiting (ACL)

Prevents speaker damage by providing gentle gain reduction at the clipping threshold.

Instantaneous Gain Modulation (IGM)

Monitors speaker loads to detect conditions that may overstress output devices.

Comprehensive Protection Features

Includes SHORT CIRCUIT, DC VOLTAGE, THERMAL MANAGEMENT, and TRANSIENT protection.

Specifications

Output Power Ratings

Details stereo and bridged mono power ratings at various impedances and THD levels.

Performance Metrics

Connectors and Controls

TourClass Protection

Architects Specifications

Channel and Power Requirements

Defines channel count and minimum power delivery at specified impedances and THD.

Protection Circuitry

Specifies circuitry for output shorts, thermal overload, DC voltage, and active clip limiting.

Output Stage and Response

Front Panel Features

Rear Panel Features