Crest Audio CPA1200 - User Manual

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 CPA1200 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 ampli-
fier. Bass is solid and defined to the limits of audibility, with
ample current reserves delivered by an “over-engineered”
power supply and advanced Class
H circuitry. Wide-band-
width output devices assure detailed, transparent high fre-
quency response. And, thanks to Crest’s exclusive
IGM circuit,
the CPA1200 will drive 2
Ω loads safely without compromise
in performance.
Construction and Quality Control
The CPA1200 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 CPA1200
receives a rigorous “hot room” burn-in before thorough final
checkout 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
1
⁄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 700w 1200w 1400w 2400w 2800w
20Hz-20kHz, 0.1% THD+N 650w 1100w 1100w 2200w 2200w
Power figures are watts per channel, both channels driven.
CPA1200
CPA1200 power amplifier
4Ω stereo CPA400 CPA600 CPA900 CPA1800
1kHz, 0.01% THD+N 435w 600w 900w 1800w
20Hz-20kHz, 0.1% THD+N 400w 500w 800w 1700w
power specifications:
other CPA Series power amplifiers

Summary

Amplifier Description

Construction and Quality Control

Details Crest's USA manufacturing, component selection, quality, and rigorous testing processes.

Key Features

TourClass Protection Circuits

Specifications Overview

Input and Output Connectors

Details dealer-configurable XLR and TRS inputs, plus Speakon and binding post outputs.

Controls and Indicators

Describes front panel attenuators and rear panel mode/ground lift switches, plus LED indicators.

Construction and Dimensions

Specifies steel chassis, rack-mounting dimensions, and weight.

Warranty Information

Details the amplifier's five-year warranty, with conditions for extension.

Architects Specifications

Performance Requirements

Defines minimum power output at various impedances and THD+N levels.

Protection and Circuitry

Outlines essential protection features like active clip limiting and impedance sensing.

Cooling and Airflow

Specifies dual variable speed DC fans for back-to-front airflow.

Input Sensitivity and Gain

Details standard input sensitivity and options for gain adjustment.

Power Supply and Current Draw

Specifies universal voltage operation and maximum current draw limits.

Front and Rear Panel Details

Describes front panel indicators/attenuators and rear panel connectors/switches.

Crest Audio CPA1200 Specifications

General

Total Harmonic Distortion (THD)	< 0.1%
Damping Factor	> 200
Input Sensitivity	1.4V
Signal to Noise Ratio	> 100 dB
Input Impedance	20 kOhms
Frequency Response	20Hz - 20kHz (+0/-0.5dB)
Power Output (4 Ohms)	450W RMS per channel
Dimensions (H x W x D)	3.5" x 19" x 15"