Infinity Reference5760 & 5761 free download

File name Infinity-Reference5760_5761 caramp.pdf

Reference Series 6 CHANNEL POWER AMPLIFIER 5760a 5761a SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev2aa10/2005 Power Amplifier Reference 5760a/5761a - CONTENTS SPECIFICATIONS ...1 FEATURES/TEST CONDITIONS...2 CONTROLS/CONNECTIONS...3 INSTALLATION...5 BASIC TROUBLESHOOTING...7 TYPICAL SYSTEM WIRING...8 EXPLODED VIEW/PARTS LIST...9 MECHANICAL PARTS LIST...10 AMPLIFIER BLOCK DIAGRAM...11 P.C.B. DRAWINGS...12 ELECTRICAL PARTS LIST ... 16 REF 5761a ELECTRICAL PARTS LIST ADDENDUM...20 IC/TRANSISTOR PINOUTS... ...21 REF 5760a SCHEMATICS...24 REF 5761a SCHEMATICS...28 PACKING...32 Reference 5760a/5761a 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 82dBA (reference 1W into 4 ohms) 117W channels 1,2,3,4; 163W channels 5,6 @ 2 ohms 6.373 @ 4 ohms 10Hz ­ 57kHz channels 1,2,3,4; 10Hz ­ 302Hz channels 5,6 6.3V Reference 5760a - 230mV Reference 5761a - 75mV <50mV (-50%) .063dB @ 4 ohms 2.1A 22k 34A @ 4 ohms 88A @ 2 ohms 89.5 @ 4 ohm bridged 12 x 18 1/2 x 2 11/16" (L x W x D) (305mm x 470mm x 68mm) 2 x 30A Signal-to-noise ratio: Dynamic power: Effective damping factor: Frequency response: Maximum input signal: Maximum sensitivity: DC Offset Output regulation: Idle Current Input Impedance Max Current Draw Dimensions: Fuse: Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and details in this and related JBL publications are therefore subject to change without notice. 1 Power Amplifier Reference 5760a/5761a Features · · · · · · · 4-Channel Operation Advanced MOSFET Oversized Floating Rail Power Supply Floating Ground Factory - Head - Unit Speaker - Level input Variable lnput Sensitivity (250mV - 6V) Fully Complementary Output Stage with Class-A6 Voltage Amplification Gold-plated Power, lnput and Output Connectors 2-Ohm Stable (Stereo) Test Conditions and Notes · All tests to be done, unless otherwise specified, from 10Hz to 47KHz and 302Hz at 14.4V DC into 4 ohm loads and adjust the units gain so that with a .775 volt input signal the unit is at Its maximum rated output. All measurements will be done using an Audio precision system one and the supply voltage. An A+ line voltage of 14.4V DC shall be applied to the unit under test for all measurements unles