Page 1
SPECIFICATION
FOR DYNAMIC SPEAKER
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www.be-star.com
RoHS
Preliminary Specification For The Acoustic
Characteristics of Dynamic Speaker
Customer
Date
Page
Approval：
1.Description
2.Characteristics
3.Drawing
4.Reliability test
5.Notice
6.Packing
7.History Change Record
09 Feb. 12
01 of 07
Model Name
Product No.Customer P/N
Issue No.
Issue Date
BLS50-12-16H17 LF
121216
BS/TES01.728A
2012/02/09
Drawn by
汪凤声
Checked by
王 平
Approved by
张秀琴
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
Customer approved
Page 2
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BLS50-12-16H17 LF
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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
G
No. Item Specifications
G
1. Size Ø50*15mm
2. Impedance at 1KHz 16± 3.2 Ω
3. Resonance frequency 500±20%Hz
F
4. Operating frequency range fo...4K Hz
F
5. Rated input power 0.5W
6. Maximum input power 1W
7. Buzz & Rattle(at sine wave2V) must be normal
E
8. SPL(0.1W,0.1M) 88± 3dB(at 1KHz)
E
9. Polarity Positive voltage to (+),
the diaphragm move forward
10. Cone Mylar
D
11. Magnet Nd-Fe-B
D
10. Operating temperature -20...+60°C
and shall not be used in whole or in part without its written content
11. Storage temperature -30...+ 70°C
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
C
2.2 Test Method
Power Amplifier
C
10cm
0.1W(1.26Vrms)
B
Speaker
Mic
Audio
B
Analyser
Anechoic chamber
Date:
A
A
Rev.
2012/02/09
Date
6
汪凤声
Drawn
Note
Drawn by:
Checked by:
Approved by:
www.be-star.com wu@be-star.com
45 3
2012/02/09
汪凤声
王 平
张秀琴
BLS50-12-16H17 LF
Speaker
DRG NO:BS/TES01.728A
2 1
A
Page:02 of 07
Page 3
6 45 3
BLS50-12-16H17 LF
H
2.3 Frequency Response Curve (only for reference)
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A: Frequency Response Magn 0 dB re 20.00 μPa/V 1/12Oct
G
F
G
F
Sound Pressure Level (dB)
E
E
Frequency (Hz)
2.4 Resonance Frequency Curve
A: Frequency Response Magn 0 dB re 20.00 μPa/V 1/12Oct
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
C
Sound Pressure Level (dB)
B
B
Frequency (Hz)
Date:
A
A
Rev.
2012/02/09
Date
汪凤声
Drawn
Note
6
Drawn by:
Checked by:
Approved by:
www.be-star.com wu@be-star.com
45 3
2012/02/09
汪凤声
王 平
张秀琴
BLS50-12-16H17 LF
Speaker
DRG NO: BS/TES01.728A
2 1
A
Page:03 of 07
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BLS50-12-16H17 LF
3.Drawing
G
F
+-
E
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.
2012/02/09
Date
汪凤声
Drawn
Note
6
Drawn by:
Checked by:
Approved by:
www.be-star.com wu@be-star.com
45 3
2012/02/09
汪凤声
王 平
张秀琴
BLS50-12-16H17 LF
Speaker
DRG NO:BS/TES01.728A
2 1
Page:04 of 07
D
C
B
A
Page 5
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BLS50-12-16H17 LF
4. Reliability Test
4.1 Load test
G
Input Power 0.5W,white noise
Duration 96hrs
4.2 Heat test
Temperature +70± 3°C
Duration 96hrs
F
4.3 Cold test
Temperature -30± 3°C
Duration 96hrs
E
4.4 Temperature change( shock )
Low Temperature -20± 3°C
High Temperature +60± 3°C
Dwell time each temperature 30min
Transfer time from lower to upper temperature<15s
Cycles 5
D
4.5 Moisture Test
Tempeature +40± 2°C
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.
Humidity 90±~95±(RH)
Duration 48hrs
G
F
E
D
C
4.6 Drop test
Surface(floor) concrete or steel
C
Height 80cm
Direction X,Y&Z 3axes
B
A
A
Rev.
After the test,all electronic and acoustic characteristic should be satisfied with the
specification. SPL: Deviation is of 2dB of initial value.
2012/02/09
汪凤声
王 平
张秀琴
BLS50-12-16H17 LF
DRG NO:BS/TES01.728A
2012/02/09
Date
6
汪凤声
Drawn
Note
Date:
Drawn by:
Checked by:
Approved by:
www.be-star.com wu@be-star.com
45 3
B
A
Speaker
Page:05 of 07
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Page 6
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BLS50-12-16H17 LF
6. Packing
G
F
15pcs
E
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.
D
14pcs paperboard per carton，
C
NO:
SPEAKER:
1pcs cardboard per carton,
210pcs per carton，
each board packed interlaced
C
QUANTITY:
每箱8板，
GR/NET WT: Kg
39X25X17 cm
每箱1只盖板，
每箱210只，
板与板交错摆放而非按同一方向
B
Date:
A
A
Rev.
2012/02/09
Date
汪凤声
Drawn
Note
6
Drawn by:
Checked by:
Approved by:
www.be-star.com wu@be-star.com
45 3
2012/02/09
汪凤声
王 平
张秀琴
BLS50-12-16H17 LF
Speaker
DRG NO:BS/TES01.728A
2 1
Page:06 of 07
B
A
Page 7
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BLS50-12-16H17 LF
7. History change record
G
version
No.
A
F
E
Before
Change Items
After
Date
2012/02/09
汪凤声
ApprovedDrawn
张秀琴
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.
2012/02/09
Date
汪凤声
Drawn
Note
6
Drawn by:
Checked by:
Approved by:
www.be-star.com wu@be-star.com
45 3
2012/02/09
汪凤声
王 平
张秀琴
BLS50-12-16H17 LF
Speaker
DRG NO:BS/TES01.728A
2 1
Page:07 of 07
D
C
B
A
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