1
kHz
, 0.1
% THD+N
20
Hz
–20
kHz
, 0.1
% THD+N
600
W
550
W
900
W
800
W
1000
W
900
W
1800
W
1600
W
2000
W
1800
W
82
V
rms,
116
V
peak
each channel
20
Hz
–20
kHz
,
+0 / -0.3
dB
, -3
dB
@
135
kHz
20
Hz
–20
kHz
,
-.2
dB
/ +.84
dB
<0.01%
rated power
@
4
Ω
, 1
kHz
<0.01%
rated power
@
8
Ω
, 60
Hz
and 7
kHz
700:1
10–400
Hz
@
8
Ω
>-60
dB
@
1
kHz
.775
V
standard,
(switchable; see table below)
X
86.5
standard,
(switchable; see table below)
>20
kΩ
balanced
,
>10
kΩ
unbalanced
-
105
dB,
A-weighted
full power @ 4
Ω
> -60
dB
A-weighted
full power @ 4
Ω
H
100–240 vac
@
50–60
Hz
factory configured
21
A
@
120
V
<8.6
A
@
120
V
<16.0
@
120
V
<21.0
A
@
120
V
<2.0
A
@
120
V
21
A
3250
BTU
/
Hr
4341
BTU
/
Hr
back-to-front via two rear-mounted variable-speed
DC
fans
(filters removable without tools)
female
xlr
pin 2+
dealer-configurable for pin 3+
trs
(tip+)
speakon connectors or five-way output binding posts
front panel:
two attenuators,
rear panel:
signal ground-lift switch, mode select switch
acl, signal, temp/dc
:
active
acl, igm, autoramp, short circuit, dc voltage, turn-on/-off transient,
current in-rush, sub/ultrasonic input
steel chassis, 16-gauge
double thickness in rack-ear areas
3.5" x 19" x 18"
89mm x 483 x 457mm
height x width x depth
gross:
52
lbs
23.60
kg
net:
47
lbs
21.33
kg
five years*
USA, Canada, United Kingdom, and many other countries
specifications
Crest Audio Inc.
100 Eisenhower Dr., Paramus NJ 07652 USA
TEL
: 201.909.8700
FAX
: 201.909.8744
http://www.crestaudio.com
*A4500003*
CPA900 power amplifier
The power amplifier shall have two channels.
At 8
Ω
, 20
Hz
- 20
kHz
, 0.1%
THD+N
, it shall
deliver a minimum of 550 watts per channel.
At 4
Ω
, 20
Hz
- 20
kHz
, 0.1%
THD+N
, it shall
deliver a minimum of 800 watts per channel.
In bridged mono mode with an 8
Ω
load,
20
Hz
- 20
kHz
, 0.1%
THD+N
, it shall deliver a
minimum of 1600 watts.
The amplifier shall have circuitry to protect
itself from output short circuits, thermal over-
load or other adverse load conditions. The
amplifier shall protect speaker loads from
DC
voltage on outputs. The amplifier shall have
active clip limiting and impedance sensing cir-
cuitry. Output relays shall protect the speakers
from amplifier failure.
Two rear panel mounted variable speed
DC
fans (filters detachable without tools) shall pro-
vide back to front air flow through the chassis.
Each channel shall have a standard (factory-
set) input sensitivity of 0.775 Volts, and shall
be fitted with an internal jumper which allows
the gain to be altered to
X
20 or
X
40. The
hum and noise level shall be 105
dB
below
rated output, “A” weighted.
SMPTE IMD
shall
be less than 0.01% at rated power, 60
Hz
and 7
kHz
. The amplifier shall have a class
H
output stage. The frequency response shall be
20Hz-20kHz, +0, -0.3dB (1
W
/8
Ω
).
The amplifier will operate at 100
V
-240
V
,
50-60
Hz AC
(configured at factory).
Maximum current draw shall not exceed 21
amperes at 120
VAC
(limited by front panel
breaker for bench tests).
Front panel indicators shall include
ACTIVE
,
PROTECT
,
SIGNAL
, and
CLIP LED
’s for each
channel. Front panel attenuators shall be
recessed and detented.
Rear panel input connectors shall be female
TRS
and XLR type, internally dealer-config-
urable for pin 2 (factory setting) or pin 3 posi-
tive. Output terminations shall be 5-way
output binding posts or Speakon output con-
nectors (market dependent). A ground lift
switch and a Stereo/Parallel/Bridged Mono
mode operation switch shall be provided.
A rear-panel I
EC AC
mains socket (with power
cord) or single
AC
mains cord having an appro-
priate
AC
plug for the intended operating volt-
age shall be provided (market dependent).
The packaging of the amplifier shall allow for
standard rack mounting without requiring space
between similar units. Optional rack mount han-
dles will be available. Dimensions shall be 19"
(483mm) wide, 3.5" (89mm) high and 18"
(457mm) deep. The amplifier shall weigh
47 lbs. (21.33 kg.) net, and shall be desig-
nated the Crest Audio model CPA900.
v. 1.0
10
/
5
/
98
stereo power
8
Ω
4
Ω
2
Ω
bridged mono power
8
Ω
4
Ω
maximum output voltage
frequency response
1
W
@
8
Ω
power bandwidth
rated power
@
4
Ω
, 1
% THD+N
THD
+
N
SMPTE IMD
damping factor
input
CMRR
input sensitivity
rated power
@
8
Ω
voltage gian
input impedance
hum and noise
crosstalk
class
power supply
circuit breaker rating
4
Ω
current draw
1/8 power, 4
Ω
1/3 power, 4
Ω
at power-up
at idle
peak current draw
thermal emissions
1/8 Power, 4
Ω
1/3 Power
,
4
Ω
cooling
input connectors
output connectors
controls
LED indicators
TourClass
®
protection
construction
dimensions
weight
warranty
architect’s specifications
Crest Audio specification literature is available
in downloadable PDF format at our website
http://www.crestaudio.com
Power figures are watts per channel,
both channels driven.
©
¹⁹⁹⁸
crest audio inc.
Crest Audio reserves the right to make
improvements in manufacturing or design
which may affect specification.
rear view CPA900
Power figures are
watts per channel,
both channels driven.
*Three-year Warranty
with two additional years,
if Registration Card is
sent to Crest Audio.
dealer-configurable gain/
sensitivity options
gain
sens
factory standard
x86.5
.775
V
option1
x40
1.66
V
option 2
x20
3.32
V
