Infinity Reference7540 & 7541 free download

File name Infinity-Reference7540_7541 caramp.pdf

Reference Series 7540a 7541a 4 CHANNEL POWER AMPLIFIER SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev3 10/2005 Power Amplifier Reference 7540a/7541a - CONTENTS - SPECIFICATIONS ...1 FEATURES/TEST CONDITIONS...2 CONTROLS/CONNECTIONS...3 INSTALLATION...5 BASIC TROUBLESHOOTING...6 TYPICAL SYSTEM WIRING...7 EXPLODED VIEW/PARTS LIST...8 MECHANICAL PARTS LIST...9 AMPLIFIER BLOCK DIAGRAM...10 P.C.B. DRAWINGS...11 ELECTRICAL PARTS LIST ... 15 REF 7541a ELECTRICAL PARTS LIST ADDENDUM...18 IC/TRANSISTOR PINOUTS... ...19 REF 7540a SCHEMATICS...22 REF 7541a SCHEMATICS...25 PACKING...28 Reference 7540a/7541a Specifications Output Power: 111W RMS x 4 channels @ 4 ohms; 1% THD + N (14.4V supply) 139W RMS x 4 channels @ 2 ohms; 1% THD + N 278W RMS x 2 channels @ 4 ohms; 1% THD + N Signal-to-noise ratio: 81dBA (reference 1W into 4 ohms) Dynamic power: 164W @ 2 ohms Effective damping factor: 6.315 @ 4 ohms Frequency response: 10Hz ­ 100kHz (­3dB) Maximum input signal: 5.5V Maximum sensitivity: Reference 7540a - 230mV Reference 7541a - 75mV DC Offset <50mV (-50%) Output regulation: .088dB @ 4 ohms Idle Current 1.2A Input Impedance 22k