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Summary of Contents for Infinity BU1
- Page 1 Powered Subwoofer Technical Manual Technical Manual INFINITY SYSTEMS INC. 250 Crossways Park Drive Woodbury, New York 11797 A Harman International Company Part No.: 1112-BU1 11/98...
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Page 2: Table Of Contents
Powered Subwoofer THIS MANUAL IS FOR THE BU1 REVISION WITHOUT AN EXTERNAL POWER SWITCH TABLE OF CONTENTS BU1 SPECIFICATIONS ..........1 BU1 ELECTRICAL PARTS LISTS ........8 BU1 CONTROLS AND THEIR FUNCTION ....2 BU1 PACKAGING EXPLODED VIEW ......10 BU1 TEST PROCEDURE..........3 INTEGRATED CIRCUIT DIAGRAMS ......11 BU1 AMPLIFIER BLOCK DIAGRAM......4... -
Page 3: Bu1 Controls And Their Function
Inputs are normally used when the whether the BU1’s Automatic turn-on circuit is active. When the switch is ON , the BU1 will turn receiver/processor has line-level “pre-amp out ” itself on, indicated by a green LED, when it is or “subwoofer out”... -
Page 4: Bu1 Test Procedure
Powered Subwoofer BU1 TEST PROCEDURE Turn on generator and adjust so that speaker level output TEST PROCEDURE is 1.0V, 50 Hz. Turn VOLUME control full clockwise. Green LED should light, immediate bass response should Equipment needed: be heard and felt from port tube opening. -
Page 5: Bu1 Amplifier Block Diagram
Powered Subwoofer BU1 AMPLIFIER BLOCK DIAGRAM... -
Page 6: Bu1 Cabinet Exploded View
Powered Subwoofer BU1 CABINET EXPLODED VIEW... -
Page 7: Amplifier Exploded View
Powered Subwoofer AMPLIFIER EXPLODED VIEW Amplifier Exploded View... -
Page 8: Bu1 Mechanical Parts List
Hex Nut Keps 6-32 Zinc Fsh (BRACKET SUPPORT) SC1194 Screw 6-32x3/8 Tapt-Thr Hex Washr BR1566 FIN-XTOR BAR TO-218 USED ON BU1 2 NU1049 Nut 8-32 x 1/4 Hex Keps Sink F (XFORMER) SC1285 SC 6-32 x 3/4” MACH-THR PAN PHI... -
Page 9: Bu1 Electrical Parts Lists
Powered Subwoofer BU1 ELECTRICAL PARTS LISTS Ref.# Part # Description Qty. Ref.# Part # Description Qty. Capacitors Integrated Circuits C1, 2 CP1545 CAP ALUM ELECT 4700uF 20% 50V IC1, 102, 103 IC1041 IC SMD DUAL J-FET-INPUT SNAP-IN 30x25mm OP AMP T/R TLO72... - Page 10 SW101 SW1084 SWITCH SLIDE DPDT R/A PC MOUNT TR1346 TIP35C SPKOUT CO1343 Strght Sq Hdr 0.156"Center TR1347 TIP34C MI1210 POWER TRANSFORMER BU1 TR1183 TIP31C TH1006 NTC THERMISTOR 10Kohm @ 25DegC TR1184 TIP32C VR101 RS2426 POT 20K DUAL 16mm B-TAPER VOLUME...
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Page 11: Bu1 Packaging Exploded View
Powered Subwoofer BU1 PACKAGING EXPLODED VIEW... -
Page 12: Integrated Circuit Diagrams
Powered Subwoofer INTEGRATED CIRCUIT DIAGRAMS... -
Page 13: Pcb (Top View, Component Side)
Powered Subwoofer PRINTED CIRCUIT BOARDS (TOP VIEW, component side) -
Page 14: Pcb (Bottom View, Solder Side)
Powered Subwoofer PRINTED CIRCUIT BOARDS (BOTTOM VIEW, solder side) -
Page 15: Preamp/Crossover Schematic 120V
Powered Subwoofer PREAMP/CROSSOVER SCHEMATIC 120V VERSION... -
Page 16: Amplifier Schematic 120V
Powered Subwoofer POWER SCHEMATIC 120V VERSION...
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