Sansui BA 202 Service Manual

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OPERATING INSTRUCTIONS

& SERVICE MANUAL
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STEREOPHONIC BASIC MPLIFIER

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SANSUI ELECTRIC COMPANY LIMITED

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Congratulations on owning this high quality power
amplifier manufactured by Sansui, the Worlds lead-
ing manufacturer of quality audio components.
Yours is the sister model of the BA-303 which has
been acknowledged as a breakthrough in the audio
history. Walnut case7 nonglare satin black finish,
select parts and many other features will give you
many years of listening pleasure and satisfaction. The
BA-202 can develop its outstanding performance as a
power amplifier for mid-ranges and tweeters in the
multi-channel system as well.

This manual has been prepared to guide you in pro-
per operation and maintenance of your BA»202. Please
read this carefully and keep it for future reference.

CONTENTS

OPERATING

Features ................................................ 2
Characteristics/Specifications ........................ 3
Connections and Operation ........................ 4, 5
Multi-Channel System .............................. 6, 7
Maintenance ............................................ 8
SERVICE MANUAL

Block Diagram/Exploded ............................ 9
Troubleshooting Chart .......................... 10V 11
Bias Adjustment/Parts Layout ...................... 12
Parts Layout/Test Point ............................ 13
Parts List .............................................. 14

Circuit Diagram ...................................... 15

FEATURES

6R-A8 Power Output
Tubes Plus Super Wide-

Range Output Transformer
Combined with a super wide-range out-
put transformer having 30 watt class
capacity, 6R-A8 power output tubes in
the fixed bias arrangement of Class AB
push-pull amplifier have set a new
standard of stability in performance.
The BA-202 assures you of the highest
possible stability over extended periods
of time.

HD Less Than 0.5% at
Rated Output

Harmonic distorsion is less than 0.5%
at rated output. IM distortion is less
than 1.0% at rated output. The con-
tinuous power is 11 Watts per channel
and the music power is 26 watts.

20 to 20,000 Hz Power
Bandwidth

The power bandwidth is 20 to 20,000Hz
73db at 0.5% THD.

Damping Factor 20 for

16 Ohms

More than 16db negative feedback is
applied for clear, clean tonal reproduc-
tion with the damping factor of 20.