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 CPA1800 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. The CPA1800
provides high power output coupled with true clarity, and is
well-suited for high-powered subwoofers and passive full
range systems.
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 CPA1800 will drive 2
Ω
loads safely without compromise
in performance.
Construction and Quality Control
The CPA1800 is built exclusively in Crest’s own USA manu-
facturing facility, with internal components selected for pre-
miumquality and proven durability. Each modular
subassembly is pre-tested, and once assembled, the CPA1800
receives a rigorous “hot room” burn-in before thorough final
pre-shipment checkout on precision test equipment.
.
Crest's legendary “over-built” 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
.
Speakon
™
connectors or 2 pair of five-way binding post outputs
(market dependent)
.
external switches for stereo/parallel/bridged mono mode,
pin
2
⁄
3
hot (
+
), ground lift, and gain/input sensitivity
.
recessed, stepped attenuators
.
front panel circuit breaker switch
.
modular construction
.
five-year warranty*
power specifications
8
Ω
stereo
4
Ω
stereo
2
Ω
stereo
8
Ω
bridged
4
Ω
bridged
1
kHz
, 0.01% THD
1000w
1800w
2500w
3600w
5000w
20
Hz
-20
kHz
, 0.1% THD+N
950w
1700w
2400w
3400w
4800w
Power figures are watts per channel, both channels driven.
CPA1800
CPA1800 power amplifier
4
Ω
stereo
CPA400
CPA600
CPA900
CPA1200
1
kHz
, 0.01% THD+N
435w
600w
900w
1200w
20
Hz
-20
kHz
, 0.1% THD+N
400w
500w
800w
1100w
power specifications:
other CPA Series power amplifiers
