v. 1.2 3/5/98
Crest Audio Inc.
100 Eisenhower Dr., Paramus NJ 07652 USA
TEL
: 201.909.8700
FAX
: 201.909.8744
http://www.crestaudio.com
P L 4 6 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
1kHz, 0.01% THD+N
20Hz-20kHz, 0.1% THD+N
250W
245W
435W
400W
500W
450W
830W
800W
1100W
900W
58V
82V
20Hz-20kHz, -3dB@135kHz
20Hz-20kHz, -.9dB/+.5dB
ACL, IGM, AutoRamp, short circuit, DC voltage,
turn-on/off transient, current inrush, sub/ultrasonic input.
<0.01%
<0.01%
550:1
> - 60dB
0.775V standard (see table below)
X61 standard (see table below)
>20k
Ω
/>10k
Ω
-105dB
> - 60 dB
AB
Female XLR (pin 2+, dealer configurable for pin 3+), TRS (tip+)
5-way output binding posts
27,200
µ
F
100V-240V, 50-60Hz
1.4A
6.8A
10.0A
15A
2030 BTU/hr
2726 BTU/hr
Back-to-front via 2 rear panel mounted variable-speed DC fans
(filters removable without tools)
Front Panel: 2 attenuators
Rear Panel: signal ground lift switch, mode select switch
Clip/Limit, Signal, Temp/DC, Active
Steel chassis, 16 gauge. Double thickness in rack ear areas.
3.5" x 19" x 17.85" / 89 x 483 x 454mm
46 lbs. / 20.88 kg., 41 lbs. / 18.61 kg.
3 years, parts & labor
8
Ω
Stereo Power
4
Ω
Stereo Power
2
Ω
Stereo Power
8
Ω
Bridged Mono 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)
TourClass
®
Protection
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 8
Ω
)
Voltage Gain
Input Impedance (balanced/unbalanced)
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
Gain
Sens
Dealer-Configurable Gain/Sensitivity Options
Factory Standard
X61
.775V
Option 1
X40
1.12V
Option 2
X20
2.24V
Architect’s & Engineer’s Specifications
The power amplifier shall have two channels. At 8 ohms, 20Hz
- 20kHz, 0.1% THD+N, it shall deliver a minimum of 245 watts
per channel. At 4 ohms, 20Hz - 20kHz, 0.1% THD+N, it shall
deliver a minimum of 400 watts per channel. In bridged mono
mode with an 8 ohm load, 20Hz - 20kHz, 0.1% THD+N, it
shall deliver a minimum of 800 watts.
Two rear panel mounted variable speed DC fans (filters
detachable without tools) shall provide back to front air flow
through the chassis.
The amplifier shall have circuitry to protect itself from output
short circuits, thermal overload or other adverse load condi-
tions. The amplifier shall protect speaker loads from DC volt-
age on outputs. The amplifier shall have active clip limiting
and impedance sensing circuitry. Output relays shall protect
the speakers from amplifier failure.
Each channel shall have a standard (factory-set) input sensitiv-
ity of 0.775 Volts, and shall be fitted with an internal jumper
which allows the gain to be altered to X20 or X40. 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, 60Hz and 7kHz. The amplifier shall have a class AB
output stage. The frequency response shall be 20Hz-20kHz,
+0, -0.3dB (1W/8
Ω
).
The amplifier will operate at 100V-240V, 50-60 Hz AC (config-
ured at factory). Maximum current draw shall not exceed 15
amperes at 120VAC (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-configurable for pin 2 (factory setting)
or pin 3 positive. Output terminations shall be 5-way output
binding posts. A ground lift switch and a Stereo/
Parallel/Bridged Mono mode operation switch shall be provid-
ed.
A rear-panel IEC AC mains socket (with power cord) or single
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.
Optional rack mount handles will be available. Dimensions
shall be 19" (483mm) wide, 3.5" (89mm) high and 17.85"
(454mm) deep. The amplifier shall weigh 41 lbs. (18.61 kg.)
net, and shall be designated the Crest Audio model PL4601.
Power figures are watts per channel, both channels driven. Crest Audio reserves the right to make improvements in manufacturing or design which may affect specification.
©1997 Crest Audio Inc.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
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
CAUTION
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Designed & manufactured in the USA by:
Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
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Rear View
