MODEL 6600A
SIX CHANNEL
AMPLIFIER
The Amplified Design International Professional
Series Model 6600A is a six channel full
featured Amplifier. This compact instrument
(four rack unit) is equipped with three individual
power supplies, six independent balanced and
unbalanced inputs, detent level controls, signal
presence and “Soft Clip” indication, dual
temperature activated fan assist, Stereo/Bridge
switches per each two channels. The 6600A
delivers 400 Watts into 8 Ohms, 600 Watts into
4 Ohms and 750 Watts into 2 Ohms all six
channels driven from 20Hz to 20kHz at less than
.1% distortion (typically 0.01%). Model 6600A
incorporates a three-year, Five Star protection
plan featuring the following unprecedented
circuitry. VI energy limiters are incorporated for
short circuit protection. If an extreme low
impedance exists on any channel, a current
sensing circuit will reduce the output to prevent
amplifier overdrive.
If an abnormally high AC line voltage is present
or an excessive voltage surge appears, the
amplifier will detect the situation and turn itself
off. If an unlikely DC situation occurs, DC
sensing circuits will trigger the amplifier channel
and turn off. Thermal sensors are installed in
each channel to protect against an over
temperature condition. “Soft Clip” circuitry has
been incorporated for added protection to
prevent hard clipping from improper use. A rear
panel selectable 80Hz Linkwitz Riley fourth
order Lo-Pass filter switch has been added to
channel six for subwoofer applications. Other
features included are internal selectable input
sensitivity, ground lift switch and fully modular
design for service accessibility. Remote turn on
is available as an option. The Model 6600A will
operate from 100/240V 50-60Hz AC Mains and
measures 7” high (four rack unit), 19” wide and
16 1/2” deep.
