Page 1
SPECIFICATION
FOR DYNAMIC SPEAKER
Customer
Date
Page
09 Feb. 06
01 of 07
07TOTAL PAGE
Model Name
Product No.Customer P/N
Issue No.
Issue Date
www.be-star.com
RoHS
BLS18-11-04H7.8-BOX LF
127903
BS/TES01.1124A
06/02/09
Table of Contents:
1.Description
2.Characteristics
3.Drawing
4.Reliability Test
5.Packing
6.History Change Record
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Approved by
Customer approved
BESTAR ELECTRONICS INDUSTRY CO.,LTD
No.199 HuangHe West Road.New district,ChangZhou,JiangSu Province,P.R.China
Tel: +86 519 88222567 Fax: +86 519 88222551
E-mail:wu@be-star.com http://www.be-star.com
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1.Description
1.1 Acoustic component Performance Specification
1.2 The present document specifies performance
requirements for the acoustic characteristics of speaker
2.Characteristics
2.1 Electrical and Mechanical Characteristics
No. Item Specification
1. Dimension Ø18 x7.8(mm)
2. AC Impedance 4Ω±15%(at 2KHz/1Vrms)
3. Rated Input Power 1.5W(2.45Vrms)
4. Maximum Input Power 2.0W(2.83Vrms)
5. Resonance Frequency 500Hz ±20%
6. Frequency Response F0~20KHz
7. S.P.L 84±3dB/0.3m/1W at 0.6,0.8,1.0,1.2KHz average
12
G
F
E
8. THD ≤5% (at 1.0KHz/0.1W)
E
9. Buzzes & Rattles Must be normal at sine wave 2.45Vrms
10. Polarity Positive voltage to (+),Diaphragm moves forward
11. Operating Temperature -20~+ 65°C
12. Storage Temperature -30~+ 75°C
D
D
13. Weight ~2.9g±0.3g
and shall not be used in whole or in part without its written content
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
C
2.2 Test Method
Power Amplifier
C
30cm
1.0W(2.0Vrms)
B
Speaker
Mic
Audio
B
Analyser
Anechoic chamber
Date:
A
A
Rev.
06/02/09
Date
6
王文邦
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45 3
06/02/09
王文邦
王 平
李红元
BLS18-11-04H7.8-BOX LF
Speaker
DRG NO: BS/TES01.1124A
2 1
A
Page:02 of 07
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BLS18-11-04H7.8-BOX LF
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2.3 Frequency Response Curve (only for reference)
A: Frequency Response Magn 0 dB re 20.00μPa/V 1/12Oct
100
12
G
G
90
80
F
F
70
Sound Pressure Level (dB)
E
60
100
1K 2K
5K 10K 20K
E
Frequency (Hz)
2.4 Total Harmonic Distortion (only for reference)
A: Frequency Response Magn 0 dB re 20.00μPa/V 1/12Oct
D
D
20
and shall not be used in whole or in part without its written content
THD (%)
15
10
C
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
C
5
B
0
100
1K 2K 5K 10K 20K
B
Frequency (Hz)
Date:
A
A
Rev.
06/02/09
Date
王文邦
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45 3
06/02/09
王文邦
王 平
李红元
BLS18-11-04H7.8-BOX LF
Speaker
DRG NO: BS/TES01.1124A
2 1
A
Page:03 of 07
Page 4
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BLS18-11-04H7.8-BOX LF
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3. Drawing
Unit:mm
Tolerance:±0.2
45
3
12
G
F
Diaphragm
G
F
★Cavity of speaker
E
D
Unit:mm
Tolerance:±0.2
E
D
and shall not be used in whole or in part without its written content
Speaker
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
C
B
Date:
A
A
Rev.
06/02/09
Date
王文邦
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6
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45 3
Unit
06/02/09
王文邦
王 平
李红元
www.be-star.com wu@be-star.com
BLS18-11-04H7.8-BOX LF
Speaker
DRG NO: BS/TES01.1124A
2 1
C
B
A
Page:04 of 07
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4. Reliability Test
4.1 Load Test
Power (Nom) 1.5W(sine wave)
Duration 96hrs
12
G
Temperature +75±3°C
G
Duration 96hrs
4.3 Low Temperature Test
Temperature -30±3°C
Duration 96hrs
4.4 Damp Heat
4.2 High Temperature Test
F
Temperature 40±3°C
F
Relative Humidity 90%-95%RH
Duration 96hrs
4.5 Temperature Cycle Test
Cycles 4
E
T(°C)
transition time:20-30s
E
+75
+25
-30
D
1
1 1
t (h)
D
and shall not be used in whole or in part without its written content
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
1 cycles
4.6 Drop Test
C
Height 1.0m
Drop face thick board (20mm)
C
Times 10 (three times in
each durection )
Notice:
1.Immediately after reliability test,the samples shall be stored under climatic conditions
such as normally exist in ordinary rooms or laboratories.Unless otherwise noted,the
B
recovery period shall be 4hrs at least before performance testing.
2. After reliability test ,all samples must be meet the requirements specified
B
3.Sensitivity difference at 0.6~1.2KHz shall be within ±3dB from initial value after test.
Date:
A
A
Rev.
06/02/09
Date
6
王文邦
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06/02/09
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李红元
BLS18-11-04H7.8-BOX LF
Speaker
DRG NO: BS/TES01.1124A
2 1
A
Page:05 of 07
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5. Packing
12
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F
E
G
F
E
TBD
D
D
and shall not be used in whole or in part without its written content
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
C
B
Date:
A
A
Rev.
06/02/09
Date
王文邦
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6
Drawn by:
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06/02/09
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李红元
BLS18-11-04H7.8-BOX LF
Speaker
DRG NO: BS/TES01.1124A
2 1
Page:06 of 07
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A
Page 7
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6. History Change Record
12
version
No.
A
G
F
E
Before After
Change Items
Date
06/02/09
Drawn
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Approved
李红元
G
F
E
D
and shall not be used in whole or in part without its written content
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
C
B
Date:
A
A
Rev.
06/02/09
Date
王文邦
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6
Drawn by:
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45 3
06/02/09
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李红元
BLS18-11-04H7.8-BOX LF
Speaker
DRG NO: BS/TES01.1124A
2 1
Page:07 of 07
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