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
3
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 (H x W x D) . . . . . . . . . . . . . . . . . . . . . 11
½
" (29.2cm) x 11
½
" (29.2cm) x 11
½
" (29.2cm)
Add 1
¾
" (4.5cm) for feet.
Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 lbs/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)
BU-80/HTS-10 rev. A,B PCB (version 5.1)
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
...............................30
