Description, Characteristics – BeStar BLS18-11-04H7.8 LF User Manual
Page 2
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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
Drawn by:
Drawn
Rev.
Date
Approved by:
Checked by:
Note
Date:
Page:02 of 07
A
2.Characteristics
2.1 Electrical and Mechanical Characteristics
No. Item Specification
1. Dimension
Ø18 x 7.8 (mm)
2. AC Impedance 4
Ω
±
15%(at 1KHz)
3. Rated Input Power 1.5W(2.45Vrms)
4. Maximum Input Power 2.0W(2.83Vrms)
5. Resonance Frequency 550Hz
± 20%
6. Frequency Response F0~20KHz
7. S.P.L 84
± 3dB/0.1m/0.1W at 0.6,0.8,1.0,1.5KHz average
8. THD ≤5% (at 1KHz/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~+ 65
° C
12. Storage Temperature -30~+ 75
° C
13. Weight 3.0g
± 0.2g
Speaker
06/02/09
06/02/09
朱成兴
BLS18-11-04H7.8 LF
DRG NO: BS/TES01.547A
BLS18-11-04H7.8 LF
Speaker
Mic
Audio
Analyser
Power Amplifier
10cm
0
.1
W
(0
.6
4
V
rms)
2.2 Test Method
Anechoic chamber
博 士 達
郭 敏
王善梅
朱成兴