Information Sheet
* Continuous sine wave power is limited by current rating of front panel circuit breaker and IGM circuit.
Power Specifications
4 Ohm Stereo
2 Ohms (Channel A Only)
8 Ohms Bridged
20Hz - 20kHz
<0.1% THD
600 Watts
600 Watts
1200 Watts
EIA
@ 1 kHz, <0.05% THD
650 Watts
650 Watts
1290 Watts
*
PFA
SERIES
PFA600
DC-POWERED
AMPLIFIER
Crest’s PFA600 is a compact, extremely powerful DC-powered
amplifier designed for portable and mobile applications where
AC is either unavailable or impractical. The PFA600 matches the
same uncompromisingly high-quality circuitry used in the Crest
Professional Series amplifiers with two high-efficiency DC-to-
DC switching power supplies, incorporating Class H modulated
supply rails for further efficiency.
Three rack spaces high, the PFA600 runs on 24 volts DC. A
forced-air configuration is used to cool channel heat sinks mount-
ed in a back-to-back tunnel arrangement. Input/Output barrier
strips, Octal Sockets and circuit breaker/power switches are pro-
vided for each channel.
The rugged steel chassis is designed for long-term structural
soundness. Either channel can be independently switched off if
not required, conserving battery power.
The PFA600, like Crest’s Professional and CC/CV Series ampli-
fier, features comprehensive protection circuitry, including IGM,
which allows the amplifier to operate safely even into very
stressful loads, and Auto-Ramp, which gradually increases gain
when the amplifier is initially powered up or comes out of a pro-
tect mode.
