Service Manuals, User Guides, Schematic Diagrams or docs for : KEF Audio HTB2 hfe_kef_htb2se_service_en
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HTB2SE Subwoofer
of
home theatre 3000 series
SERVICE MANUAL
Ver.1.0
May13 2011
HTB2SE
TABLE OF CONTENT
General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
System Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Woofer Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
ABR Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Exploded view of electronic parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Exploded view of cabinet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1
HTB2SE
GENERAL SPECIFICATION
Typical LIMIT UNIT
1) THD (@70Hz with 20KHz Filter)
Output 100W 0.08 0.35 %
Output 28V,No load 0.8 1.0 %
2) Input sensitivity (@100Hz with 20KHz Filter)
Output 100W 580 +/-10% mVrms
Output 160W 1.8 +/-15% Vrms
3) S/N (@70Hz Input, A-Weight)
Output 40W 95 85 dB
Output 160W 100 95 dB
4) Filter (@70Hz 10mV Input, Output ref 0dB)
High Pass Filter, -6dB Point 30 +/-10% Hz
Low Pass Filter, -6dB Point 360 +/-10% Hz
5) Filter Roll-off (Relative to -6dB Point)
High Pass Filter Roll-off -12 +/-2 dB
Low Pass Filter Roll-off -28 +/-4 dB
6) Bass Boost (@40Hz 10mV Input, Bass Boost set to 0dB, Output ref 0dB)
Bass Boost Switch set to +6dB +6.5 +/-1 dB
Bass Boost Switch set to +12dB +13.5 +/-1 dB
7) Phase Adjustable (@100Hz Output 10V ref 0 degree)
Phase Switch set to 0 degree 0 0 degree
Phase Switch set to 180 degree 180 180 degree
8) Hum & Noise (Bass Boost Switch set to +12dB, Input with 1K ohm)
Output with 20KHz Filter <3 5 mVrms
9) Current Consumption < 10 second
JAP 100V @Output 160W 3 3.5 A
@IDLE 0.15 0.20 A
US 115V @Output 160W 2.8 3.2 A
@IDLE 0.15 0.20 A
EU/UK 230V @Output 160W 1.5 1.8 A
@IDLE 0.10 0.15 A
AUST 240V @Output 160W 1.5 1.8 A
@IDLE 0.10 0.15 A
2
HTB2SE
GENERAL SPECIFICATION
10) Input Impedance RCA 5K +/-10% Kohm
11) Auto Turn on Level @70Hz 2 +/-1 mVrms
12) Auto Turn Off Delay Time 17 +/-3 Min
13) Standby Current 230V <0.02 <0.05 A
Standby Current 115V <0.01 <0.03 A
3
HTB2SE
SYSTEM SPECIFICATIONS
Frequency Response 30~250 Hz
Sensitivity 110dB+/-2dB @1W/m
Nominal Rating 250W
Dimension (W x D x H) 390x440x195mm(vertical)
227x440x385mm(horizontal)
Net Weight 11kg / pc
WOOFER SPECIFICATIONS
Rated Impedance 4+/-0.8 ohms at 1V 130 Hz
Sweep Test Sine Wave 14V at 20-1.5K Hz
Resonant Frequency (Fo) 24 +/- 5Hz at 1V
Sensitivity 89+/-2 dB/W/m
Frequency Response Fo ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo