FHDDMT28A
1.SPECIFICATION
Speaker
1 |
Dimension |
φ 28 * H 11.3mm |
|
2 |
Impedance |
4Ohm ± 20% at 1KHz |
|
3 |
Rated Input Power |
3.0W |
|
4 |
Max Input Power |
3.5W |
|
5 |
Lowest Resonance Frequency |
450 20% Hz @ 1V. (Without Baffler) |
|
6 |
Audible Noise |
input power shall be set at rated noise power(3.0W). Using an audio oscillator sweep from F0 to 20KHZ in free air. There shall be no buzzes,rattles,nor spurious noises. |
|
| Sound Pressure Level | 95±3dB SPL(0.1m,1.0W) at1.0KHz (0dB SPL = 20μPa) | ||
| 8 | Distortion | Less exceeded ≤ 10% at 1.0KHz | |
| 9 | Operating Temperature | -20 ℃ to +50 ℃ | |
| 10 | Store Temperature | -30 ℃ to +60 ℃ |
2.Dimensions
3.Reliability Test Reliability Test
| 3.1 | High Temperature Test |
|
| 3.2 | Low Temperature Test |
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| 3.3 | Humidity Test |
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| 3.4 | Vibration Test |
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| 3.5 | Temperature Cycle Test |
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| 3.6 |
|
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| 3. 7 | Load Test |
|
The test shall be carried out on the parts that passed 12hours in temperature 20℃.
4.Electrical And Acoustical Measuring Condition
5.Frequency Response
Keywords: FHDDMT28A
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