Harman Infinity BU-80 Service Manual

DETAILED SPECIFICATIONS
LINE VOLTAGE Yes/No Hi/Lo Line Nom. Unit Notes
US 120vac/60Hz Yes 108-132 120 Vrms Normal Operation
EU 230vac/50-60Hz Yes 207-264 230 Vrms Normal operation, MOMS required
Asia 100vac/50Hz No 90-110 100 Vrms Normal Operation
Parameter Specificatio
n
Unit QA Test
Limits
Conditions Notes
Type (Class AB, D, other) D n/a n/a
Load Impedance (speaker) 4 Ohms n/a Nominal
Rated Output Power 50 Watts 50 1 input driven
THD@ Rated Power 0.3 % 1 22k filter 50w (Power Bandwidth 30-100Hz)
THD @ 1 Watt 0.8 % 1 22k filter
DC Offset 10 mV-DC 20 @ Speaker Outputs
Damping factor 100 DF
Input Sensitivity
Input Frequency 45 Hz 40 Nominal Freq. 1 input driven
Line Input 86 mVrms ±2dB To Rated Power/ Vol @
Max
1 input driven: AP source Z = 600 ohms
Speaker/Hi Level Input 2.3 Vrms ±2dB To Rated Power/ Vol @
Max
1 input driven: AP source Z = 25 ohms
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Amplifier/Subwoofer BU-80/HTS-10
GENERAL SPECIFICATIONS
Frequency Response (± 3dB) .................45Hz – 150kHz
Output (RMS).............................75W
Driver ..................................8"Woofer
Crossover Frequency .......................50Hz ~ 150Hz (continuously variable)
Dimensions (HxWxD).....................11½" (29.2cm) x 11½" (29.2cm) x 11½" (29.2cm)
Add 1¾" (4.5cm) for feet.
Weight..................................26lbs/11.8 kg,
Refinements may be made on occasion to existing products without notice,
but will always meet or exceed original specifications unless otherwise stated.
TABLE OF CONTENTS
SAFETY INFORMATION..................................................2
DETAILED SPECIFICATIONS .........................................3
GENERAL SPECIFICATIONS..........................................3
CONTROLS AND THEIR FUNCTION .............................5
BU-80/HTS-10 CONNECTIONS.......................................6
OPERATION ...................................................................10
BU-80/HTS-10 TEST SET UP AND PROCEDURE ......11
BU-80/HTS-10 POWER AMP TEST PROCEDURE
FLOW CHART ................................................................12
SERVICE BULLETIN INF9902 - APRIL 1999 ...............14
SERVICE BULLETIN INF2000-01 - JANUARY 2000....15
SERVICE BULLETIN INF2000-02 - MARCH 2000 .......16
TECH TIPS .....................................................................17
BU-80/HTS-10 AMPLIFIER ASSEMBLY
EXPLODED VIEW ..........................................................18
BU-80/HTS-10 PACKING & CABINET PARTS .............19
BU-80/HTS-10 rev. A,B PCB (version 5) ....................... 20
BU-80/HTS-10 rev. A,B PCB (version 5.1) .....................21
BU-80/HTS-10 ELECTRICAL PARTS LIST...................22
BU-80/HTS-10 INTEGRATED CIRCUIT/
TRANSISTORS DIAGRAMS ..........................................23
BU-80/HTS-10 SCHEMATIC 1 of 2 ...............................24
BU-80/HTS-10
HTS-10 REV C ELECTRICAL PARTS LIST
HTS-10 REV C CIRCUIT BOARDS
HTS-10 REV C SCHEMATIC
SCHEMATIC 2 of 2 ...............................2
...................27
...............................30
.........................................33
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Harman Infinity BU-80 Specifications

General

Brand	Harman
Model	Infinity BU-80
Category	Subwoofer
Language	English