3
Amplifier/Subwoofer BU-120/HTS-20
GENERAL SPECIFICATIONS
Frequency Response (± 3dB) .................30Hz – 150Hz
Output (RMS).............................150W
Driver ..................................12"Woofer
Crossover Frequency .......................50Hz ~ 150Hz (continuously variable)
Dimensions (HxWxD).....................14½"(36.8cm) x 14 ½" (36.8cm) x14 ½" (36.8cm)
Add 1 ¾" (4.5cm) for feet.
Weight..................................43lbs/19.5 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
GENERAL SPECIFICATIONS.......................................................3
DETAILED SPECIFICATIONS ......................................................4
CONTROLS AND THEIR FUNCTION ..........................................6
BU-120/HTS-20 CONNECTIONS..................................................7
OPERATION ................................................................................11
BU-120/HTS-20 TEST SET UP AND PROCEDURE .................12
BU-120/HTS-20 POWER AMP MODULE
TESTING FLOW CHART ............................................................13
SERVICE BULLETIN INF9902 Rev 1 - FEBRUARY 2001 .........14
SERVICE BULLETIN INF2000-01 Rev 2 - FEBRUARY 2001 ....15
TECH TIPS .................................................................................16
BU-120/HTS-20 PACKING & CABINET ASSEMBLY................17
BU-120/HTS-20 AMPLIFIER ASSEMBLY
EXPLODED VIEW ......................................................................18
BU-120/HTS-20 rev. A PCB (revision 3.52)
Component Side Trace...................................................20
BU-120/HTS-20 rev. A PCB (revision 3.52)
Solder Side Trace...........................................................21
BU-120/HTS-20 rev. A PCB (revision 3.53)
Component Side Trace...................................................22
BU-120/HTS-20 rev. A PCB (revision 3.53)
Solder Side Trace...........................................................23
BU-120/HTS-20 ELECTRICAL PARTS LIST.................24
BU-120/HTS-20 IC DIAGRAMS .....................................25
BU-120/HTS-20 SCHEMATIC 1 of 2 .............................26
BU-120/HTS-20
HTS-20 REV B ELECTRICAL PARTS LIST
SCHEMATIC 2 of 2 .............................27
....................28
HTS-20 REV B SCHEMATIC...........................................33
HTS-20 REV B POWER AMP MODULE SCHEMATIC...34
HTS-20 REV B CIRCUIT BOARDS.................................31
REGARDING SERVICE FOR THE INFINITY HTS-20 SUBWOOFER
There are two versions, an "A" and "B", with minor internal differences.
Data for both versions is included, and differences noted in the following pages.
Units can be identified for service as follows:
Amplifier faceplate says "Made in Canada" on the "A" version.
Amplifier faceplate says "Made in China" on the "B" version.
To Next Page
Loading...
