FHDDMT87A
1.SPECIFICATION
Speaker
1 |
Dimension |
87*87 * H28 |
2 |
Impedance |
8±15%Ω at 1KHz,1.0V |
3 |
Rated Input Power |
2W |
4 |
Max Input Power |
4W |
5 |
Lowest Resonance Frequency |
250Hz 20% |
6 |
Audible Noise |
Must be free audible noise (buzzes and rattles)(Fo ~ 7KHz frequency range ,input level up to 4V) |
7 |
Sound Pressure Level |
85±3 dB @ 0.4,0.5,0.6,0.8, 1.2KHz @ 1W/1.0m |
8 |
Magnet |
φ 40 * φ 19*8 |
9 |
Operating Temperature |
-20 ℃ ~ +60 ℃ |
10 |
Store Temperature |
-30 ℃ ~ +70 ℃ |
2.Dimensions * Unit: mm
Tolerance: ± 0.5mm Except Specified
3.Reliability Test Reliability Test
3.1 Load Test Continuous Load Test
Power Power: 2W
Duration Test Duration: 48hrs
3.2 High Temperature Test Heat Resistance Test
Temperature Temperature: +55±2 ℃
Relative Humidity:20%-25% RH
Duration Test Duration: 16hrs
3.3 Damp Heat Humidity Test
Temperature Temperature: 40±2 ℃
Relative Humidity Humidity: 90%-95% RH
Duration Test Duration: 48hrs
All these tests above should be measured after leaving normal temperature for 1hrs.
Sensitivity difference at 1kHz shall be within ± 3dB from initial value after test.
After the above test is completed, it must be placed at room temperature for 1 hour before testing.
test sound pressure level change requirements 1kHz must be within ± 3dB.
4.Electrical And Acoustical Measuring Condition
5.Frequency Response
6.Packing
Add 6 magnetic isolation plates by air:
500*370mm * 2 pieces
500*200mm * 2 pieces
370*200mm * 2 pieces
shipping does not require additional magnetic isolation plate
Keywords: FHDDMT87A
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