BeStar BMS25-11-04H4.5 LF User Manual

SPECIFICATION

FOR DYNAMIC SPEAKER

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08TOTAL PAGE

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.Packing

6.History Change Record

12 Oct. 2010

01 of 08

Model Name

Product No.Customer P/N
Issue No.
Issue Date

BMS25-11-04H4.5 LF

139004

BS/TES01.1078A

2010/10/12

Drawn by

Checked by

Approved by

Customer approved

BESTAR ELECTRONICS INDUSTRY CO.,LTD

No.199 HuangHe West Road.New district,ChangZhou,JiangSu Province,P.R.China
Tel: [phone] Fax: [phone]

E-mail:[e-mail] http://www.be-star.com

6 45 3

BMS25-11-04H4.5 LF

H

G

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 Ø 25 x 4.5 (mm)

2. AC Impedance 4 Ω±15%(at 1KHz/1Vrms)

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G

F

3. Rated Input Power 1.5W(2.45Vrms)

F

4. Maximum Input Power 2.0W(2.83Vrms)

5. Resonance Frequency 500Hz ±20%

6. Frequency Response F0~20KHz

E

7. S.P.L 85±3dB/0.1m/0.1W at F0~2KHz

E

8. THD ≤2% (at 1.0~10KHz/0.1W)

9. Buzzes & Rattles Must be normal at sine wave 2.45Vrms

10. Polarity Positive voltage to (+),Diaphragm moves forward

11. Operating Temperature -20~+ 70°C

D

12. Storage Temperature -40~+ 85°C

D

13. Weight ~3.1g±0.3g

and shall not be used in whole or in part without its written content

2.2 Test Method

This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.

C

Power Amplifier

C

10cm

0.1W(0.63Vrms)

B

Speaker

Mic

Audio

B

Analyser

Anechoic chamber

Date:

A

A

Rev.

2010/10/12

Date

王文邦

Drawn

Note

6

Drawn by:
Checked by:

Approved by:

www.be-star.com [e-mail]

45 3

2010/10/12

王文邦

王 平

李红元

BMS25-11-04H4.5 LF

Speaker

DRG NO: BS/TES01.1078A

2 1

A

Page:02 of 08

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BMS25-11-04H4.5 LF

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2.3 Frequency Response Curve (only for reference)

A: Frequency Response Magn 0 dB re 20.00 μPa/V 1/12Oct

100

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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)

D

D

4

and shall not be used in whole or in part without its written content

THD (%)

3

2

C

This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.

C

1

B

0

100

1K 2K 5K 10K 20K

B

Frequency (Hz)

Date:

A

A

Rev.

2010/10/12

Date

王文邦

Drawn

Note

6

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Checked by:
Approved by:

www.be-star.com [e-mail]

45

2010/10/12

王文邦

王 平

李红元

3

BMS25-11-04H4.5 LF

Speaker

DRG NO: BS/TES01.1078A

2 1

A

Page:03 of 08

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BMS25-11-04H4.5 LF

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2.5 F0 Curve (only for reference)

A: Frequency Response Magn 0 dB re 20.00 μPa/V 1/12Oct

16

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G

G

12

8

F

(ohm)

F

4

E

0

100

1K 2K

5K 10K 20K

E

Frequency (Hz)

2.6 R&B Curve (only for reference)

D

D

2.0

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

1.5

1.0

C

(%)

0.5

B

0

100

1K 2K 5K 10K 20K

B

Frequency (Hz)

Date:

A

A

Rev.

2010/10/12

Date

王文邦

Drawn

Note

6

Drawn by:
Checked by:

Approved by:

www.be-star.com [e-mail]

45 3

2010/10/12

王文邦

王 平

李红元

BMS25-11-04H4.5 LF

BMS25-11-04H4.5 LF

Speaker

DRG NO: BS/TES01.1078A

2 1

A

Page:04 of 08

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3. Drawing

unit:mm

tolerance:±0.2

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G

F

E

D

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

Diaphragm(black)

Date:

A

A

Rev.

2010/10/12

Date

王文邦

Drawn

Note

6

Drawn by:
Checked by:

Approved by:

www.be-star.com [e-mail]

45 3

2010/10/12

王文邦

王 平

李红元

BMS25-11-04H4.5 LF

Speaker

DRG NO: BS/TES01.1078A

2 1

Page:05 of 08

C

B

A

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BMS25-11-04H4.5 LF

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4. Reliability Test

4.1 Load Test

Power (Nom) 1.5W(sine wave)
Duration 96hrs

G

4.2 High Temperature Test

Temperature +85±3°C
Duration 96hrs

4.3 Low Temperature Test

Temperature -40±3°C
Duration 96hrs

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F

4.4 Damp Heat

F

Temperature 40±3°C
Relative Humidity 90%-95%RH
Duration 96hrs

4.5 Temperature Cycle Test
Cycles 10

E

T(°C)

transition time:20-30s

E

+85

D

+25

D

-40

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

4.6 Drop Test

30

30 30

1 cycles

Height 1.0m

t (min)

C

Drop face thick board (20mm)
Times 10 (three times in
each durection )

Notice:

1.Immediately after reliability test,the samples shall be stored under climatic conditions

B

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

3.Sensitivity difference at F0~2KHz shall be within ±3dB from initial value after test.

Date:

A

A

Rev.

2010/10/12

Date

6

王文邦

Drawn

Note

Drawn by:
Checked by:

Approved by:

www.be-star.com [e-mail]

45 3

2010/10/12

王文邦

王 平

李红元

BMS25-11-04H4.5 LF

Speaker

DRG NO: BS/TES01.1078A

2 1

A

Page:06 of 08

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5. Packing

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12

G

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.

2010/10/12

Date

王文邦

Drawn

Note

6

Drawn by:

Checked by:
Approved by:

www.be-star.com [e-mail]

45 3

2010/10/12

王文邦

王 平

李红元

BMS25-11-04H4.5 LF

Speaker

DRG NO: BS/TES01.1078A

2 1

Page:07 of 08

C

B

A

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BMS25-11-04H4.5 LF

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6. History Change Record

博 士 達

12

version
No.

A

G

F

E

Before After

Change Items

Date

2010/10/12

Drawn

王文邦 李红元

Approved

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.

2010/10/12

Date

王文邦

Drawn

Note

6

Drawn by:

Checked by:
Approved by:

www.be-star.com [e-mail]

45 3

2010/10/12

王文邦

王 平

李红元

BMS25-11-04H4.5 LF

Speaker

DRG NO: BS/TES01.1078A

2 1

Page:08 of 08

D

C

B

A