A&B Components

Speaker manufacturer  A & B Components Co. Ltd.

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10-20mm 21-36mm 36mm above Rectangular Cabinet

mini spekaermicro speaker

1 Type Natural mylar dynamic speaker
2 Dimension External diameter 29.0 mm
3 Rated Input Power 0.25W
4 Impedance 8ohm ± 15% at 1000Hz
5 Resonance Frequency (Fo) 700 Hz ± 25% at Fo, 1V
6 Sensitivity (S.P.L.) 83dB(W/m) ± 3 dB at AVE 1.0K,1.2K,1.5K,1.8K(Hz).
    96dB(0.25W/0.1m) ± 3 dB
7 Frequency Range Fo – 3.3KHz
8 Distortion Less than 10 % at 1000Hz 0.25 W
9 Max. Input Power Must be normal at 0.5 W white noise for 1 minute.
10 Voice Coil Diameter 6.0 mm
11 Magnet Rare earth permanent (Nd-Fe-B) magnet Φ5.0 x 0.5 mm
12 Weight 11g ± 5%
13 Appearance Should not exist any obstacle to be harmful to normal operation; damages, cracks, rusts and distortions, etc.
14 Operation Test Must be normal at program source –0.25W
15 Buzz, Rattle, etc. Should not be audible at 1.41V sine Wave between Fo to 20KHz
16 Polarity When positive voltage is applied to the terminal marked (+), diaphragm should move to the front.
17 Terminal Strength Capable of withstand 1kg load for 30 seconds without resulting in any damage or rejection.
18 Load Test 0.25 W white noise is applied for 96 hours and satisfy the test listed on item 05,06,13,15
19 High Temp. Test Keep 96 hours at +70℃±3℃ and leave 3 hours in normal temperature and then check
20 Low Temp. Test Keep 96 hours at -20℃±3℃ and leave 3 hours in normal temperature and then check
21 Humidity Test Keep 96 hours at + 60℃±3℃ relative humidity 95% and leave 3 hours in normal temperature and then checked.
22 Drop Test Drop the speakers contained in normal box onto the board 20mm thick 10 times from the height of 0.75m and then should satisfy the test listed on item 13 and 15

Response Data Sheet


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