| ITEM |
|
SPECIFICATIONS |
| 1 |
Type |
Dynamic speaker |
| 2 |
Dimension |
External diameter 10 mm |
| 3 |
Rated Input Power |
0.05 W |
| 4 |
Impedance |
32 ohm ± 15% at 2500Hz |
| 5 |
Resonance Frequency (Fo) |
1300 Hz ± 20% at Fo, 1V |
| 6 |
Sensitivity (S.P.L.) |
64 dB(W/m) ± 3 dB at AVE 2.0-2.8 KHz. |
| |
|
72dB (0.05W/0.1m) ± 3 dB |
| 7 |
Frequency Range |
Fo – 20KHz |
| 8 |
Distortion |
Less than 10% at 2500Hz,0.05W |
| 9 |
Max. Input Power |
Must be normal at 0.2W white noise for 1 minute. |
| 10 |
Voice Coil |
Diameter 5.7 mm |
| 11 |
Magnet |
Rare earth permanent (Nd-Fe-B) magnet Φ5.2 x 0.3 mm |
| 12 |
Weight |
0.6g ± 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 – 0.05W |
| 15 |
Buzz, Rattle, etc. |
Should not be audible at 1.26V 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 |
Temperature |
Operating temperature: -20℃ to +60℃ |
| |
|
Storage temperature: -30℃ to +70℃ |
