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Reference Series
5760a
6 CHANNEL POWER AMPLIFIER

SERVICE MANUAL




Infinity Systems, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797 Rev1 8/2004
Power Amplifier Ref5760a
- CONTENTS -

SPECIFICATIONS ................................................1
FEATURES/TEST CONDITIONS.............................2
CONTROLS/CONNECTIONS...................................3
INSTALLATION......................................................5
BASIC TROUBLESHOOTING..................................8
TYPICAL SYSTEM WIRING....................................9
EXPLODED VIEW/PARTS LIST..............................10
MECHANICAL PARTS LIST..................................11
AMPLIFIER BLOCK DIAGRAM..............................12
P.C.B. DRAWINGS...............................................13
ELECTRICAL PARTS LIST .................................. 17
IC/TRANSISTOR PINOUTS............................... .....21
SCHEMATICS......................................................24
PACKING...........................................................28



Reference 5760a Specifications

Output Power: 56W RMS x 4 and107W RMS x 2 channels @ 4 ohms; 1% THD + N
80W RMS x 4 and150W RMS x 2 channels @ 2 ohms; 1% THD + N
148W RMS x 2 and 287W RMS x 1 channels @ 4 ohms; 1% THD + N
Signal-to-noise ratio: 82dBA (reference 1W into 4 ohms)
Dynamic power: 117W channels 1,2,3,4; 163W channels 5,6 @ 2 ohms
Effective damping factor: 6.373 @ 4 ohms
Frequency response: 10Hz