1kHz, <0.02% THD+N
20Hz-20kHz, <0.1% THD+N
1200W
1100W
2200W
2050W
4400W
4100W
3300W
3000W
6600W
6000W
114V
161V
20 Hz-20 kHz, -3dB @ 53kHz
20 Hz-20 kHz, +0/-0.2dB
Clip Limit, IGM, AutoRamp, High Temp, short-circuit,
DC voltage, turn-on/off transient, sub/ultrasonic input.
<0.02%
0.05%
200:1
>60 dB
2.26V RMS
X40
>20k
Ω
> -100 dB
> -60dB
H
Female XLR Input (pin 3+), Octal Socket.
Single screw solderless copper output lugs.
46,000 µF
100V-240V, 50-60Hz
2.0A
16.2A
30.0A
65.0A
3850 BTU/hr
7700 BTU/hr
Rear to front tunnel heatsink, variable speed DC fan, 140 CFM max.
Front panel: 2 attenuators, circuit breaker/power switch;
Rear panel: mode switch, signal ground lift jumper.
Clip/Limit, Signal, Temp/DC, Active
12 ga. steel chassis, 0.187" (5mm) aluminum front panel
5 1/4" x 19" x 19.5", 133mm x 483mm x 496mm
115 lbs (52.21 kg.), 110 lbs (49.94 kg.)
5 years, parts and labor†
8
Ω
Stereo Power
4
Ω
Stereo Power
8
Ω
Bridged Mono Power
2
Ω
Stereo Power
4
Ω
Bridged Mono Power
Max RMS Output Voltage
(each channel)
Peak Output Voltage
(each channel)
Frequency Response
(+0 / -0.3dB, 1W/8
Ω
)
Power Bandwidth
(rated power at 4
Ω
, 1% THD+N)
Protection Circuitry
THD+N
(rated power at 4
Ω
, 1kHz)
SMPTE IMD
(rated power at 8
Ω
, 60Hz & 7kHz)
Damping Factor
(10-400Hz at 8
Ω
)
Input CMRR
(1kHz)
Input Sensitivity
(rated power at 4
Ω
)
Voltage Gain
Input Impedance
(balanced)
Hum and Noise
(“A” weighted, full power, 4
Ω
)
Crosstalk
(“A” weighted, full power, 4
Ω
)
Class
Input Connectors
(per channel)
Output Connectors
(per channel)
Filter Storage
Power Supply
(factory configured)
Idle Current Draw
(120V)
1/8 Power Curr. Draw
(typical music, 120V/4
Ω
)
1/3 Power Curr. Draw
(continuous music, 120V/4
Ω
)
Max Curr. Draw
(circuit breaker rating, 120V/4
Ω
)
Thermal Emissions
(1/8 Power, 4
Ω
)
Thermal Emissions
(1/3 Power, 4
Ω
)
Cooling
Controls
LED Indicators
(per channel)
Construction
Dimensions
(Height x Width x Depth)
Gross Weight, Net Weight
Warranty
† USA, Canada, U.K., and many other countries. Power figures are watts per channel, both channels driven. Crest Audio reserves the
right to make improvements in manufacturing or design which may affect specifications. Crest Audio specification literature is available
in downloadable PDF file format; visit our website at http://www.crestaudio.com. ©1997 Crest Audio Inc. 5/21/97
v. 2.4 10/15/97 B5000009
Crest Audio Inc.
100 Eisenhower Dr., Paramus NJ 07652 USA
TEL
: 201.909.8700
FAX
: 201.909.8744
http://www.crestaudio.com
Printed in USA
9 0 0 1 P OW E R A M P L I F I E R
S P E C I F I C AT I O N S
Architect’s & Engineer’s Specifications
The power amplifier shall consist of 2 channels and deliver
a minimum of 1100 watts at 8 ohms, 2050 watts at 4 ohms
and 3000 watts at 2 ohms; per channel, both channels dri-
ven, 20Hz-20kHz, <0.1% THD+N. In bridged (mono)
mode, it shall deliver a minimum of 4100 watts at 8 ohms,
and 6000 watts at 4 ohms, 20 Hz-20kHz, <0.1% THD+N.
The amplifier shall be rear-to-front tunnel-cooled, with a
variable-speed (140 CFM max) DC fan.
The amplifier shall have circuitry to protect itself and the
speaker load from output short circuits, DC voltage on out-
puts, and thermal overload. It shall have RMS clip limiting
and impedance sensing circuitry. Output relays shall pro-
tect the speakers from any type of amplifier failure.
The amplifier shall have a voltage gain of X40 with an
input sensitivity of 2.26V for rated power at 4 ohms. The
hum and noise level shall be greater than 100 dB below
rated output, “A” weighted. The amplifier shall have a
class H output stage with a modulated power supply. The
frequency response shall be greater than 20Hz-20kHz, +0,
-.3dB (1W/8
Ω
).
The amplifier shall operate at either 100, 120, 220, or 240
volts, 50-60 Hz AC (configured at factory). Maximum cur-
rent draw at 120V shall be no greater than 65A, both chan-
nels driven continuously into 4 ohm resistance.
The amplifier front panel shall include Active, Temp/DC,
Signal Present and Clip/Limit LED indicators for each
channel, a combination power switch/magnetic circuit
breaker and recessed and detented gain pots.
Rear panel input connectors shall be XLR type, one female
per channel. Output connectors shall be single screw sol-
derless copper lug type, two per channel. A signal/ground
lift jumper shall be provided.
A rear-panel AC mains cord having an appropriate AC
plug for the intended operating voltage shall be provided
(market dependent).
The packaging of the amplifier shall allow for standard
rack mounting without requiring space between similar
units. Dimensions shall be 19" (483mm) wide, 5.5"
(133mm) high and 15" (381mm) deep. It shall weigh 110
lbs. (49.94kg) net. The amplifier shall be designated the
Crest Audio Model 9001.
PUSH
PUSH
MODEL 9001
MAXIMUM OUTPUT
POWER PER CHANNEL
8
Ω
1200 WATTS
4
Ω
2200 WATTS
DO NOT OPERATE
WITHOUT THIS
PROTECTIVE COVER
NEXSYS
OUTPUT
SAMPLE
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
AVIS : RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC
ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU Á
L'HUMIDITÉ
Designed & manufactured in the USA by:
Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
IN
B
IN
A
PIN
3+
SIGNAL
GROUND
LIFT
A
B
--
OUT A
+
--
BRIDGE
+
+
OUT B
--
STEREO
BRIDGE
PARALLEL
Rear View
*B5000009*