Instruction Manual

SPECTRA SONICS
MODEL 101 AUDIO AMPLIFIER
Operating Instructions
GENERAL
The Model 101 Audio Amplifier is designed specifically for professional
applications requiring both unequaled performance and reliability at a
competitive cost. It performs such functions as microphone preamplifier,
booster amplifier, mixing amplifier, program amplifier, line amplifier, and
other such functions as required up to line levels. This unique amplifier
contains an integral active isolation "transformer" which additionally
eliminates system ground loop problems without increased cost and performance
limitations.
UNCONDITIONAL GUARANTEE
When utilized in accordance with these operating instructions, the
performance to published specifications, and the operational reliability of the
Model 101 Audio Amplifiers are Unconditionally Guaranteed by SPECTRA SONICS for
a minimum period of two full years from the date of manufacture. Any returned
amplifier will be repaired, without charge, the same day received by SPECTRA
SONICS. To validate this offer, the amplifier must be accompanied by its
guarantee certificate, and referred through your authorized SPECTRA SONICS
distributor/fabricator for preliminary checkout.
TERMINATION
In size and termination the Model 101 Audio Amplifier is similar to other
SPECTRA SONICS printed circuit card modules allowing ease in housing, wiring,
and grounding as provided by the Model 201 Card Holder. It is placed in
operation by insertion into a Model 230 Card Connector (10 terminal bifurcated)
or equivalent as contained in the card holder. Bifurcated contact edge
connectors should be used for positive contact.
With the connector oriented with "A" terminal to the top and the circuit
card shallow key cut-out to the top, wire as follows:
A Blank
B Blank
C Blank
D Signal Input +
E Signal Input -
F Signal Output –
H Signal Output +
J +24 VDC (B+)
K DC Signal Output+
L Feedback Point (For gain determining resistor or SPECTRA SONICS
Microphone/Program Equalizer
January 1970