揚聲器規格書(SPEAKER SPECIFICATIONS) PRODUCT NO. TSB28E-8A(LEAD FREE)
（產品型號）

TEST IN HIGH TEMP
耐溫試驗
After having been in a test chamber for 3 days at the
condition of +70℃, and then left 2hours in a room.
Sensitivity Change within 3dB relative to initial value,
Fo/Impedance change within 10% relative to initial value.
TEST IN LOW TEMP
耐寒試驗
After having been in a test chamber for 3 days at the
condition of -40℃±3℃and then left 2hours in a room.
Sensitivity Change within 3dB relative to initial value,
Fo/Impedance change within 10% relative to initial value.
STATIC TEST
耐濕試驗
After having been in a test chamber for 60hours at the
condition of +60℃ 90%~95%R.H.and then left 4hours in a
room. Sensitivity Change within 3dB relative to initial
value, Fo/Impedance change within 10% relative to initial
value.
LOAD TEST
連續實驗
At 0.3W white noise is applied for 96hours and then should
satisfy the test described under item 01and 07.
DROP TEST
落下試驗
Dropping to concrete floor from 1.60 m height, in the state
of packing，Directions: 1corner, 3 edges, 6 planes.Total
10 times ，Sensitivity Change within 3dB relative to
initial value, Fo/Impedance change within 10% relative
to initial val
OPERATING
TEMPERATURE
動作溫度
-25℃ ～+65℃
STORAGE TEMPERATURE
保存溫度 -40℃～+70℃
Temperature Cycle
Test
（溫度循環試驗）
-40℃ for 0.5h then change to 60℃ for 0.5h
within 5 minutes, then -40℃, total 85cycles.
Sensitivity Change within 3dB relative to initial
value, Fo/Impedance change within 10% relative
to initial value