Crown D-60 - Section 1 DESCRIPTION; General; Pictorial

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Section 1
DESCRIPTION
1.1 GENERAL
FIG. 1 - 1
INTEGRATED CIRCUIT STEREO
D-60 AMPLIFIER
The D-60 is a dual-channel medium power ampli-
fier for ultra-low distortion amplification from
5Hz to 20KHz with operation into loads
of 4 ohms
and higher. The
unit features extremely low har-
monic and intermodulation distortion, very l
ow
noise, highest "damping factor," and quality parts
and workmanship. The
unit may be wired to pro-
duce a balanced 25 volt monaural output. The am-
plifier is fully protected against mismatched and
shorted loads by a resetting
V-1 (volt-ampere)
limiter having no obnoxious muting or program
delays.
The power supply features large computer-grade
filter capacitors.
1
A total of 24 discrete transistors, 1 linear IC (dual
op amp), 14 diodes and 1 bridge rectifier are uti-
lized in a
CROWN-pionee red Class AB+B output
circuit The effective number of semiconductors
is 40 transistors and 24 diodes
Th e input voltage-amplifiers, (I C), are powered by
two voltage-regulated supplies. This results in
complete channel-to-channel isolation and inde-
pendence from line voltage variations.
Two level controls are mounted
on the front panel
to allow balancing and optimizing of system levels.