NO.
|
Item
|
Specification
|
Condition
|
|
1
|
Dimensions
|
50*33.2H mm
|
|
|
2
|
Nomial Impedance
|
4±15% OHM
|
At 1.0KHz / 0.63V
|
|
3
|
Input power
|
Rated:5.0W/ Max:8.0W
|
At3.46V /4V
|
|
4
|
Resonance Frequency
|
125±20%Hz
|
At0.63V
|
|
5
|
S.P.L.
|
88±3 dB(0.1W/0.1M)
|
At0.8K/1.0K/1.2K/1.5KHz (Average)
|
|
6
|
Frepuency Range
|
F0~20KHZ
|
Output S.P.L. -10dB
|
|
7
|
Distortion
|
5%Max
|
At 1.0KHz 0.1W/0.1M
|
|
8
|
Buzze & Rattle
|
Not be audible sine wave between at3.46V /150~3KHz.
|
|
|
9
|
Polarity
|
Diaphragm shall move forward.
|
|
|
10
|
Load test
|
Must be normal after load test:white noise 48 hours.
|
|
|
11
|
High TEMP test
|
After having been in a test chamber for 48 hours at the condition of
+60 ℃ 20~25% R.H and keep 2 hours.
|
|
|
12
|
Cold TEMP test
|
After having been in a test chamber for 48 hours at the condition of
-25℃ ±3℃ and keep 2 hours.
|
|
|
13
|
Humidity test
|
After having been in a test chamber for 48 hours at the condition of
+40 ℃ 90~95%R.H and keep 4 hours.
|
|
|
14
|
Drop test
|
The speak shall be dropped 2 times, clause 8 shall be satisfied.
|
|
|
15
|
Weld
|
terminal weld: 350℃/≤2~3sec*2bit.
|
|
|
16
|
Store temp
|
-25℃ To +60℃
|
|