Vs650
POWER AMPLIFIER
P o w e r S p e c i f i c a t i o n s
8
Ω
S t e r e o
4
Ω
S t e r e o
2
Ω
S t e r e o
8
Ω
B r i d g e d
4
Ω
B r i d g e d
1kHz, 1% THD+N
2 0 0 W
3 2 5 W
4 2 5 W
6 5 0 W
8 5 0 W
Figures are Watts per channel, both channels driven.
Product Information
The Crest Vs650 integrates cost-effective design with exception-
al sonic accuracy, long-term reliability, and basic features
required for a variety of professional applications.
The Vs650’s remarkable price/performance ratio is the result of
innovative engineering and highly efficient manufacturing in
Crest’s modern USA facility–along with nearly two decades of
leadership in professional amplifier design. However, no com-
promises in component selection or quality control were permit-
ted as a shortcut to cost reductions. In every respect, the Vs650
embodies the Crest Audio tradition of roadworthy ruggedness
and reliability. For example, the Vs650 includes the same
TourClass
®
protection features as found in Crest’s CA, CKS,
CKV and CKX Series amplifiers. That means the Vs650 will
endure virtually any type of mishap or system stress–from uncon-
trolled ‘upstream’ oscillation to extreme ambient heat or acciden-
tal shorting–without damage to internal circuitry or connected
speakers.
Equally suited to permanent installation or mobile applications,
the Vs650 offers a welcome balance of exceptional audio perfor-
mance and overall value.
Vs650 Features
• Robust “Over-built” Power Supply - Massive filter capacitors
and a high output custom transformer provide ample current for
solid bass performance, even when driving low impedance loads.
• More Output Transistors - By using more output devices than
many comparable competitive models, the Vs650 puts less stress
on each device for a wider safe operating area (SOA) and long-
term reliability.
• Wide-Band Design - Frequency response extends from 10Hz
to 20kHz (-3dB at 165kHz), ensuring powerful sub-bass perfor-
mance as well as detailed, transparent high frequency response.
• Effective Cooling - Large, extruded aluminum heatsink and
front-mounted, two-speed 4-inch fan minimize internal tempera-
tures to prolong amplifier life.
• Rated for Sustained Operation into 2
Ω
Loads
• Front Panel Magnetic Circuit Breaker/Power Switch -
Eliminates need for AC line fuses.
• TourClass Protection Circuits
ACL (Active 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
impedances.
AutoRamp gradually increases gain to attenuator setting
level when the amplifier is turned on.
TourClass also includes protection from thermal runaway,
input overload, DC, short circuit, in-rush current, and turn-
on/turn-off transients.
• Rear Panel Detented Attenuators
• Differentially-balanced 1/4" TRS and Barrier Strip Input
Connectors
• Five-Way Binding Post or Speakon Output Connectors
(market dependent)
• LED Indicators for Signal Present and Clip (each channel),
Active, and Protect
• Stereo/Bridged Mono Mode Select Switch
• Five Year Warranty*
