P o w e r S p e c i f i c a t i o n s
Both ch. @ 4
Ω
Lows @ 2
Ω
/ Highs @4
Ω
Lows @ 4
Ω
/ Highs @8
Ω
Lows @ 8
Ω
/ Highs @16
Ω
High Frequency Power @ 1kHz, <0.05% THD
940 Watts
990 Watts
940 Watts
670 Watts
Low Frequency Power @ 100Hz, <0.1% THD
240 Watts
220 Watts
125 Watts
95 Watts
Figures are Watts per channel, both channels driven.
Product Description
The Crest Audio 7301 is a two rack space, compact power ampli-
fier specifically designed for use in bi-amplified systems, includ-
ing stage monitor, studio monitor and front-of-house applica-
tions. The low frequency channel (Ch. A) utilizes class H opera-
tion, which increases efficiency and yields higher output power
on the low end. The high frequency channel (Ch. B) utilizes class
AB operation which is optimized for precise reproduction of mid
and high-frequency signals.
For bi-amped systems, the Crest Audio 7301 is unmatched in
quality, efficiency and sonic accuracy. When used in combina-
tion with a crossover (including those available in the Crest
Audio Octal Socket Accessory line), the 7301 becomes a com-
plete bi-amplification system, in a space-efficient package.
The 7301 is fully compatible in design with the other Crest
Audio Professional Series amplifiers, Octal Socket Accessories,
and the NexSys
®
computer controlled audio system.
Design and Construction
The no-compromise approach in the 7301’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, steel single piece chassis.
7301 Features
• Crest Audio’s legendary “overbuilt” power supply
• Toroidal power transformer
• Latest generation of high-speed, wide-bandwidth output
devices
• Tunnel cooling with back-to-front air flow
• Dual, variable speed DC fans
• High thermal mass heat sinks
• Balanced XLR inputs
• 5-way output binding post connectors
• Rear panel ground lift jumper
• 7301 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 2
Ω
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.
• Recessed, stepped attenuators
• Front panel circuit breaker/power switch
• Modular construction
• Full five-year warranty
(USA, Canada, U.K. & many other countries).
®
Crest Professional Series Amplifiers
are fully compatible with the NexSys
Computer-Controlled Audio system.
7301
POWER AMPLIFIER
