Datasheet

Test method and User precaution.
1. Characteristics measured according to standard GB/T 9396-1996
1.1 Except other specified, measuring are under Temperature 25~35℃ R.H. 25 ~75%
1.2. Judgement condition Temperature 20 ±2 R.H. 63~67%
2. Output Sound Pressure Level (S.P.L.) and distortion testing setup
3. Environment & Mechanical test:
3.1 High Temperature: GB2423.2-81
After exposure the speaker in the + 60 ± 2 °C chamber for 96 hours, then leave the
speaker at room temperature for 1 hour, the SPL should not deviate by ± 3 db, and
resonant frequency should not deviate by ± 50 Hz, compare with pre-test measurement.
3.2 Low Temperature: GB2423.1-81
After exposure the speaker in the −25 ± 2 °C chamber for 96 hours, then leave the
speaker at room temperature for 1 hour, the SPL should not deviate by ± 3 db, and
resonant frequency should not deviate by ± 50 Hz, compare with pre-test measurement.
3.3 Temperature cycle: GB5170.18-87
After exposure the speaker in the chamber, temperature cycle setting as below shows,
SPL should not deviate by ± 4 db, and resonant frequency should not deviate by ± 80 Hz,
compare with pre-test measurement.