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 CPA900 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 CPA900 will drive 2
Ω
loads safely without compromise
in performance.
Construction and Quality Control
The CPA900 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 CPA900 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
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
8
Ω
stereo
4
Ω
stereo
2
Ω
stereo
8
Ω
bridged
4
Ω
bridged
1
kHz
, 0.01% THD
600w
900w
1000w
1800w
2000w
20
Hz
-20
kHz
, 0.1% THD+N
550w
800w
900w
1600w
1800w
Power figures are watts per channel, both channels driven.
CPA900
CPA900 power amplifier
4
Ω
stereo
CPA400
CPA600
CPA1200
CPA1800
1
kHz
, 0.01% THD+N
435w
600w
1200w
1800w
20
Hz
-20
kHz
, 0.1% THD+N
400w
500w
1100w
1700w
power specifications:
other CPA Series power amplifiers
