Crest Audio PRO SERIES 4801 Specifications

Product Description
The Crest Audio Model 4801 is a compact, high-power amplifier
designed to meet the most stringent demands of professional use
in concert touring, studio monitoring, high-quality sound rein-
forcement, and professional installations.
A forced-air configuration is used to cool channel heat sinks
mounted in a back-to-back tunnel arrangement. An actively bal-
anced female XLR input connection, Octal Socket, and 5-way
output binding posts are provided for each channel.
The 4801 is fully compatible in design with other Crest Audio
Professional Series amplifiers, Octal Socket Accessories, and the
NexSys ® computer-controlled audio system.
Design and Construction
Crest Audio's no-compromise approach in the 4801's electrical
design and mechanical construction adds up to the ultimate in
reliability and performance. Only high-grade components are
used for the modular sub-assemblies in their ultra-strong, single
piece steel chassis
®
P o w e r S p e c i f i c a t i o n s
1kHz, <0.025% THD+N
20Hz-20kHz, <0.05% THD+N†
Figures are Watts per channel, both channels driven. †Continuous sine wave power is limited by current rating of front panel circuit breaker and IGM circuit.
POWER AMPLIFIER
Crest Professional Series Amplifiers
are fully compatible with the NexSys
Computer-Controlled Audio system.
8 Ω S t e r e o
4 0 0 W
3 0 0 W
4801
4801 Features
• NexSys-ready
• Toroidal power transformer
• Tunnel cooling
• Variable speed DC fan
• High thermal mass heat sinks
• Balanced XLR inputs
• 5-way output binding post connectors
• Stereo/Parallel/Bridged Mono mode selector switch
• Rear panel ground lift jumper
• Extensive protection circuitry:
- Clip Limiting prevents speaker damage with gentle gain
reduction at clip threshold.
- IGM (Instantaneous Gain Modulation) monitors connected
loads to detect conditions that may overstress output
devices, allowing safe operation into nominal 2Ω imped-
ances.
- AutoRamp gradually increases gain to attenuator setting
level when amplifier is turned on.
- Other protection circuitry: comprehensive thermal manage-
ment, and short circuit, DC voltage, turn-on/off transient,
current inrush and sub/ultrasonic input protection.
• Ultra-strong, single piece steel chassis
• Octal Accessory sockets
• Recessed, stepped attenuators
• Front panel circuit breaker/power switch
• Modular construction
• Five-year warranty
(USA, Canada, U.K. & many other countries).
4 Ω S t e r e o 2 Ω S t e r e o
5 7 5 W 7 0 0 W
4 8 0 W 6 0 0 W
8 Ω B r i d g e d 4 Ω B r i d g e d
1 1 5 0 W 1 3 0 0 W
9 6 0 W 1 2 0 0 W