Infinity Reference1210 & 1211 free download

File name Infinity-Reference1210_1211 caramp.pdf

Reference Series 1210a 1211a 1 CHANNEL POWER AMPLIFIER SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev2aa10/2005 Power Amplifier Reference 1210a/1211a - 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 1211a ELECTRICAL PARTS LIST ADDENDUM...20 IC/TRANSISTOR PINOUTS...21 REF 1210a SCHEMATICS...27 REF 1211a SCHEMATICS...30 PACKING...33 Reference 1210a/1211a Specifications Output Power: (14.4 VDC) 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: 854W RMS x 1 @ 4 ohms; 1% THD + N 1300W RMS x 1 @ 2 ohms; 1% THD + N 72dBA (reference 1W into 4 ohms) 1516W channels @ 2 ohms 6.357 @ 4 ohms 17Hz ­ 302Hz (-3dB) 5.7V Reference 1210a - 260mV Reference 1211a - 75mV <50mV (-50%) .132dB @ 4 ohms 2.8A 22k 70A @ 4 ohms 125A @ 2 ohms 12 x 18 1/2 x 2 11/16" (L x W x D) (305mm x 470mm x 68mm) 3 x 40A 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 1210a/1211a Features 1-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-D Voltage Amplification Gold-plated Power, lnput and Output Connectors 2-Ohm Stable Test Conditions and Notes All tests to be done, unless otherwise specified, from 10Hz to 302Hz at 14.4V DC into 2 ohm loads and adjust the units gain so that with a .250 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 unless otherwise specified. The voltage applied to the unit shall be measured at the power connection on the Amplifier. Signal Source Unless otherwise specified, all tests shall be conducted with the Audio Signal Generator