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Impedance Response

Reliability Testing

Type of Test

Test Specifications

High Temperature Test

96 hours at +60°C ± 3°C followed by three hours in

normal room temperature

Low Temperature Test

96 hours at -20°C ± 3°C followed by three hours in

normal room temperature

Humidity Test

96 hours at +40°C ± 3°C with relative humidity at

90%~95% followed by 6 hours in normal room

temperature

Temperature Cycle Testing

The part shall be subjected to 12 cycles using the

following procedure:

Low temperature: -20℃±3℃

High temperature:+60℃±3℃

Cycle: 2 hours at High, 5 minutes High to Low, 2

hours at Low, 5 minutes Low to High

Vibration Test

10 to 55 to 10 Hz sine sweep, per minute @

1.5mm amplitude

2 hours in each axis X, Y, and Z.

Load Test

White noise is applied at the speakers rated power

for 96 hours at room temperature

After each test, the speaker’s SPL shall be ±3 dB of the original SPL