Infinity Alpha 1200s free download

File name Infinity-Alpha1200s-Subwoofer-ServiceManual.pdf

Alpha 1200s Powered Subwoofer SERVICE MANUAL Infinity Systems Incorporated 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 4/2004 Alpha 1200s - CONTENTS - SPECIFICATIONS ...1 DETAILED SPECIFICATIONS ...2 CONTROLS... ...4 CONNECTIONS... ...5 OPERATION... ...6 BASS OPTIMIZATION SYSTEM...7 BLOCK DIAGRAM...8 BULLETIN INF2004-01... ...9 EXPLODED VIEW...10 PCB DRAWINGS...11 ELECTRICAL PARTS LIST ...16 INTEGRATED CIRCUIT/TRANSISTOR DIAGRAMS...21 SCHEMATICS ...22 PACKAGE ... ...26 Infinity Alpha 1200s Basic Specifications Frequency Response Maximum Amplifier Output Crossover Frequencies Driver Dimensions (H x W x D) 28Hz ­ 150Hz (±3dB) 500 watts RMS (20Hz ­ 150Hz with no more than 0.1% THD) 50Hz ­ 150Hz, 24dB/octave, continuously variable 12" (305mm) C.M.M.D. 17-1/2" x 17-1/4" x 18-1/4" (445mm x 438mm x 464mm) 45 lb (20.5kg) Bass Optimization Test & Measurement Kit Infinity Part Number: 335852-002 Weight Optional Accessory Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and construction details in this and related Infinity publications are therefore subject to change without notice. 1 Alpha 1200s Alpha 1200s LINE VOLTAGE US 120vac/60Hz EU 230vac/50-60Hz Parameter Amp Section Type (Class AB, D, other) Load Impedance (speaker) Rated Output Power THD @ Rated Power THD @ 1 Watt DC Offset Damping factor D 6 275 0.1 0.1 10 >50 n/a Ohms Watts % % mV-DC DF n/a n/a 220 1 0.2 60 23 Nominal 1 input driven 22k filter 22k filter @ Speaker Outputs Measured at amplifier board Measured at the speaker cable. 200 Watts, measured at speaker output terminals located at the amp board. Limiter prevents continuous power to exceed 240 Watts. Bridge type amplifier, None of the speaker terminals must be connected to system GND at any time. Powered Sub/ Plate Amp Yes/No Yes Yes Specification Hi/Lo Line 108-132 207-264 Unit Nom. 120 230 QA Test Limits Unit Vrms Vrms Conditions Notes Normal Operation Normal operation, MOMS required Notes Input Sensitivity Input Frequency L&R LP Off Mode selected Speaker/Hi Level Input Signal to Noise SNR-