Infinity BU-1 Technical Manual Download Page 10

Ref.#

Part #

Description

Qty

.

R51, 52

RS1715

SMD RES 5.6Kohm 5% 1/8W 1206

2

R56

RS1005

RES C/F 100 ohms 5% 1/2W T/R

1

R112

RS1872

SMD RES 51Kohm 5% 1/8W 1206

1

R114

RS1793

SMD RES 470Kohm 5% 1/8W 1206

1

R117

RS1968

SMD RES 2.2Mohm 5% 1/8W 1206

1

R120

RS1892

SMD RES 10Mohm 5% 1/8W 1206

1

R125

RS1883

SMD RES 1.5Kohm 5% 1/8W 1206

1

R129

RS1783

SMD RES 12Kohm 5% 1/8W 1206

1

R131

RS2419

SMD RES 430Kohm 5% 1/8W 1206

1

R132, 133, 140

RS1704

SMD RES 22Kohm 5% 1/8W 1206

3

R135

RS1712

SMD RES 43Kohm 5% 1/8W 1206

1

R141

RS1791

SMD RES 39Kohm 5% 1/8W 1206

1

Transistors

Q1

TR1346

TIP35C

1

Q2

TR1347

TIP34C

1

Q3

TR1183

TIP31C

1

Q4

TR1184

TIP32C

1

Q5, 18

TR1043

MPS2222A

2

Q6, 9, 15, 20

TR1166

2N5401

4

Q7, 8

TR1167

2N5551

2

Q10, 12, 16

TR1131

DTC114TK

3

Q11

TR1108

2SC2412K

1

Q17, 101, 102

TR1125

2SZ1037K

3

Q19

TR1010

2N2907A

1

Ref.#

Part #

Description

Qty.

Miscellaneous

CONN101

CO1334

JACK SPEAKER OCTAL PC

1

MOUNT RIGHT ANGLE

F1

FS1086

FUSE SLO-BLO 1A 250V 5x20 3AG

1

FUSE1

XX1297

Fuse Clip 5x20 PC Mount

2

HARNESS

HA1186

HARNESS 7-POSITION 0.1"

1

CENTER-CENTER L=4" (Connects

Power Board to PreAmp/

Cross-Over Board)

K1

RE1026

RELAY PC MOUNT 24V @ 6A

1

L1

MI1100

Inductor Air Core 0.38uH

1

LED101

LE1032

Led Bicolor Red/Green 5mm

1

PCB’S (BLANK)

CL1232

BLANK PCB’s WITH CONNECTOR

1

RCA102

CO1407

CONNECTOR RCA DUAL VERT.

1

PC MOUNT WHT/RED R/A GOLD

SW101

SW1084

SWITCH SLIDE DPDT R/A PC MOUNT

1

SPKOUT

CO1343

Strght Sq Hdr 0.156"Center

1

T1

MI1210

POWER TRANSFORMER BU1

1

TH1

TH1006

NTC THERMISTOR 10Kohm @ 25DegC 1

VR101

RS2426

POT 20K DUAL 16mm B-TAPER

1

VOLUME

VR102

RS1794

POT 50Kohm 20% LOG TAPER 15A

1

FREQUENCY

9

Powered Subwoofer

BU1

Summary of Contents for BU-1

Page 1: ...BU1 Powered Subwoofer A Harman International Company Part No 1112 BU1 11 98 Technical Manual Technical Manual INFINITY SYSTEMS INC 250 Crossways Park Drive Woodbury New York 11797 ...

Page 2: ...cm plus 1 32mm for feet Occasional refinements may be made to existing products without notice but will always meet or exceed original specifications unless otherwise stated TABLE OF CONTENTS BU1 SPECIFICATIONS 1 BU1 CONTROLS AND THEIR FUNCTION 2 BU1 TEST PROCEDURE 3 BU1 AMPLIFIER BLOCK DIAGRAM 4 BU1 CABINET EXPLODED VIEW 5 AMPLIFIER EXPLODED VIEW 6 BU1 MECHANICAL PARTS LIST 7 BU1 ELECTRICAL PARTS...

Page 3: ...s the unit will revert to the STANDBY mode indicated by a red LED When this switch is OFF the unit will revert to the STANDBY mode and will stay OFF regardless of input signal THIS IS NOT A TRUE AC POWER SWITCH AS IT DOES NOT DISCONNECT THE AMPLIFIER FROM THE 120VAC LINE 2 High Level Inputs These High Level Inputs are for receivers that do not have line level pre amp out or subwoofer out jacks Whe...

Page 4: ...rated amplifier fed by the signal generator 7 Turn on generator and adjust so that speaker level output is 1 0V 50 Hz Turn VOLUME control full clockwise 8 Green LED should light immediate bass response should be heard and felt from port tube opening Sweep Function 1 Follow steps 1 4 above using a sweep generator as a signal source 2 Sweep generator from 20Hz to 300Hz Listen to the cabinet and driv...

Page 5: ...4 Powered Subwoofer BU1 BU1 AMPLIFIER BLOCK DIAGRAM ...

Page 6: ...5 Powered Subwoofer BU1 BU1 CABINET EXPLODED VIEW ...

Page 7: ...6 Powered Subwoofer BU1 AMPLIFIER EXPLODED VIEW 3 2 5 6 7 8 13 9 12 10 19 19 16 16 18 17 17 18 20 14 15 21 3 11 4 4 1 BU1 Amplifier Exploded View E E D D C C B B A A 7 7 6 6 5 5 4 4 3 3 2 2 1 1 ...

Page 8: ... SC1253 Screw 4 40x3 8 Pan Phillips Hd Mc 2 THERMOSWITCH 12 HA1132 HARNESS AC CORD BU 1 BU 2 1 FRONT PLATE 13 SW1082 THERMOSWITCH 60 DEG C PANEL 1 MOUNTED FASTON TERM FRONT PLATE 14 SP1082 SPONGE W ADHESIVE L 1 4 W 1 4 2 T 3 16 BIAS XTOR THERMISTOR Ref Part Description Qty 15 SP1073 Sil Pad TO 220 0 750 x 0 500 2 16 BR1395 Bracket Pwr Support 2 17 NU1057 Hex Nut Keps 6 32 Zinc Fsh 2 BRACKET SUPPOR...

Page 9: ...1 102 DI1127 SMD Zener 5 6v 5 CP Pkg T R 2 Z1 2 DI1150 SMD Zener 15v 5 CP Pkg T R 2 Ref Part Description Qty Integrated Circuits IC1 102 103 IC1041 IC SMD DUAL J FET INPUT 3 OP AMP T R TLO72 IC101 IC1162 IC SMD Quad J Fet Input OP Amp 1 TLO74 Resistors J1 2 3 4 5 RS1779 SMD RES ZERO ohm 5 1 8W 1206 16 6 7 101 102 103 104 105 106 107 108 109 R1 2 RS2310 RES CER 0 1 ohm 5 3W 2 RADIAL BULK R3 4 RS191...

Page 10: ... 12 16 TR1131 DTC114TK 3 Q11 TR1108 2SC2412K 1 Q17 101 102 TR1125 2SZ1037K 3 Q19 TR1010 2N2907A 1 Ref Part Description Qty Miscellaneous CONN101 CO1334 JACK SPEAKER OCTAL PC 1 MOUNT RIGHT ANGLE F1 FS1086 FUSE SLO BLO 1A 250V 5x20 3AG 1 FUSE1 XX1297 Fuse Clip 5x20 PC Mount 2 HARNESS HA1186 HARNESS 7 POSITION 0 1 1 CENTER CENTER L 4 Connects Power Board to PreAmp Cross Over Board K1 RE1026 RELAY PC ...

Page 11: ...1 0 Powered Subwoofer BU1 BU1 PACKAGING EXPLODED VIEW ...

Page 12: ...1 1 Powered Subwoofer BU1 INTEGRATED CIRCUIT DIAGRAMS ...

Page 13: ...1 2 Powered Subwoofer BU1 PRINTED CIRCUIT BOARDS TOP VIEW component side ...

Page 14: ...1 3 Powered Subwoofer BU1 PRINTED CIRCUIT BOARDS BOTTOM VIEW solder side ...

Page 15: ...1 4 Powered Subwoofer BU1 PREAMP CROSSOVER SCHEMATIC 120V VERSION ...

Page 16: ...1 5 Powered Subwoofer BU1 POWER SCHEMATIC 120V VERSION ...

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