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Crest audio pl9001



Preliminary Product Description
The Crest Audio PL9001 professional power amplifier is
designed to achieve unsurpassed sonic performance and long-
term reliability – even when operating under extreme stress - in
touring or fixed installation applications. The PL9001 provides
high power output coupled with true clarity, and is well-suited
for high-powered subwoofers and passive full range systems.
Absolute sonic accuracy is the hallmark of every Crest amplifier.
Bass is solid and defined to the limits of audibility, with ample
current reserves delivered by an "over-engineered" power supply
and advanced Class H circuitry. Wide-bandwidth output devices
assure detailed, transparent high frequency response. And, thanks
to Crest's exclusive IGM circuit, the PL9001 will drive 2Ω loads
safely without compromise in performance.
Construction and Quality Control
The PL9001 is built exclusively in Crest's own USA manufactur-
ing facility, with internal components selected for premium
quality and proven durability. Each modular subassembly is
pre-tested, and once assembled, the PL9001 receives a rigorous
"hot room" burn-in before thorough final pre-shipment checkout
on precision test equipment.
Power Specs: Other PL Series Power Amplifiers
4 Ω S t e r e o
PL3301 PL4601 PL6001 PL7001 PL8001
2 5 0 W
1kHz, 0.01% THD+N
2 0 0 W
20Hz-20kHz, 0.1% THD+N
P o w e r S p e c i f i c a t i o n s
1kHz, 0.01% THD+N
20Hz-20kHz, 0.1% THD+N
4 3 5 W
6 0 0 W
9 0 0 W
1 2 0 0 W
4 0 0 W
5 0 0 W
8 0 0 W
1 1 0 0 W
8 Ω S t e r e o
1 0 0 0 W
9 5 0 W
PL9001 Features
• Crest's legendary "overbuilt" power supply
• Toroidal power transformer
• Latest generation of high-speed, wide-bandwidth output
• Twin tunnel cooling with back-to-front air flow
• Dual, variable speed DC fans
• Massive, extruded aluminum heat sinks
• Balanced XLR and 1/4-inch (TRS) inputs
• 2 pair of 5-Way Binding Post Outputs
• External switches for stereo/parallel/bridged mono mode,
Pin 2/3 hot (+), ground lift, and gain/input sensitivity
• TourClass
protection circuits:
- ACL (Active Clip Limiting) prevents speaker damage with
gentle gain reduction at clip threshold.
- IGM (Instantaneous Gain Modulation) monitors speaker
loads to detect conditions that may overstress output
devices, allowing safe operation into nominal 2Ω imped-
- AutoRamp gradually increases gain to attenuator setting
level when amplifier is turned on.
- TourClass protection also includes comprehensive thermal
management, short circuit, DC voltage, turn-on/off tran-
sient, current inrush and sub/ultrasonic input protection


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