This is the 2 pages manual for ab international 322 t brochure.
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r Advanced Technology Design Series IV from
AB International is a modular system of high
performance power amplifiers and electronic
signal processing that may be precisely tailored
to the specific requirements of professional
loudspeaker components. The experience gained
from building three generations of signal-
and new standards of performance to ATD IV.
The AB International ATD Series 322T is a two
channel power amplifier that delivers 300w per
channel thru an internal 70v line isolation
transformer. This compact (three rack unit)
instrument features convection cooling,.
individual channel level controls (rear panel),
internal input balanced isolation transformers
(optional), terminal strip input connections, 5
way binding post output connections, selectable
input sensitivity , DC latch speaker protection
and a fully modular construction for service
The 322T employs only 20dB of negative feedback N
to reduce forward transfer distortion components
to minimum levels. VI energy limiters are incorpo-
rated for short- circuit protection and a thermal
sensor prevents an over-temperature condition.
The AB International Model 322T features de-
layed-ON , instant-OFF muting control circuit al-
lows supply voltages to stabilize before loudspeak-
ers are connected. Speaker connections are in-
stantly removed , should there be an interruption of
For users desiring specific non-standard features
and/or signal processing , a wide variety of options
are available, including high pass frequencies ,cross-
over frequencies and filter topology and HF power
response equalization , contact AB International
The 322T operates from 100-240V 50-60Hz AC
mains and measures 5 1/4 " high (three rack unit),
19" wide and 12" deep.