Crest Audio PRO SERIES 9001 Specifications

POWER AMPLIFIER
Product Description
The Crest Audio 9001 is a high-power amplifier designed to
meet the most stringent needs of professional use in concert tour-
ing, high quality sound reinforcement, and professional fixed
installations.
The 9001 incorporates Crest Audio's Power Density
ing design philosophy, providing users with more substantial
power and increased headroom for a given size than comparable
amplifiers.
A three rack-space amplifier, the 9001 uses forced-air to cool
channel heat sinks mounted in a back-to-back tunnel configura-
tion. Stereo, parallel, and bridged mono operating modes can be
chosen with a rear-panel Mode Select switch. Actively balanced
female XLR input connections and single-screw solderless output
connectors are provided for each channel. The 9001 is fully com-
patible with the other Crest Audio Professional Series amplifiers,
Octal Socket Accessories and the NexSys
audio system.
Design and Construction
The 9001 is built exclusively in Crest Audio's own USA manu-
facturing facility, with internal components selected for premium
quality and proven durability. Each modular subassembly is pre-
tested, and the assembled 9001 receives a rigorous "hot room"
burn-in before thorough final checkout on precision test equip-
ment.
The no-compromise approach in the 9001's electrical design and
mechanical construction provides the ultimate in reliability and
performance. Only high-grade components are used for the mod-
ular sub-assemblies in this ultra-strong, 12 gauge steel single-
piece chassis.
®
P o w e r S p e c i f i c a t i o n s
1kHz, 0.02% THD+N
20Hz-20kHz, 0.1% THD+N
9001 Features
• Crest Audio's legendary "overbuilt" power supply
• Toroidal power transformer
• Latest generation of high-speed, wide-bandwidth output
devices
™ engineer- • Tunnel cooling with back-to-front air flow
• Variable speed DC fan
• High thermal mass heat sinks
• Balanced XLR inputs
• Single screw solderless output connectors
• Stereo/Parallel/Bridged Mono mode selector switch
• Rear panel ground lift jumper
• 9001 protection circuitry:
® computer-controlled
• Recessed, stepped attenuators
• Front panel circuit breaker/power switch
• Modular construction
• Full five-year warranty
(USA, Canada, U.K. & many other countries).
8 Ω S t e r e o 4 Ω S t e r e o
1 2 0 0 W 2 2 0 0 W
1 1 0 0 W 2 0 5 0 W
9001
- 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.
2 Ω S t e r e o 8 Ω B r i d g e d
3 3 0 0 W
3 0 0 0 W
Figures are Watts per channel, both channels driven.
Crest Professional
Series Amplifiers
are fully compatible
with the NexSys
Computer-Controlled
Audio system.
4 Ω B r i d g e d
4 4 0 0 W 6 6 0 0 W
4 1 0 0 W 6 0 0 0 W