制  品  规  格  书

SPEAKER SPECIFICATION

1.1 类型 Type

Permanent-magnet  dynamic  loudspeaker

1.2 寸法 Dimensions

outer diameter 57 mm High 8.5 mm

1.3 输入功率 Input power

Rated power 0.5W;Maximum power:1.0W

2.1 外观尺寸 Appearance Dimensions

See  Product drawing

3.1 标称阻抗 Nominal Impedance

8Ω±15% At 1000 Hz test

3.2 直流阻抗 DC Impedance

7.6Ω±10%

3.3 最低共振周波数 Lowest Resonance Frequency

360 Hz±20%

3.4 灵敏度 Output Sound Pressure Level

83± 3 dB / 1 W/1m

Average at 400.500.600.800 Hz

3.5 有效频宽 Effective Frequency Band

F0～3KHz Average SPL-10 dB

3.6 失真率 Distortion

<10% Maxium at 1000 HZ 0.1W/0.1M

3.7 纯音检测 Pure tone Test

Must be normal at sine wave 2.0 V at 300HZ ~ 3KHz

3.8 极性 Polarity

When a positive current is supplied from the speaker the terminal marked (＋)  and a negative to the other terminal the diaphragm must move toward the front．

4.1  连续负荷 Load  Test

Use Sunlilab-Model-8121c white noise signal 0.5W 72 Hour After the test should be able to meet the requirements of section 2.0 There shall be no distinct deformation in appearance.

4.2高温保存High-temperature preservation

Temperature of 65±2℃ humidity of 20~30% for 96 hour at room temperature the shelving of 1 hour the test no abnormal adverse

4.3  低温保存 Low-temperature preservation

Temperature of -25±2℃ for 96 hour, at room temperature theshelving of 1 hour the test no abnormal adverse

4.4  高温动作 High-temperature operation

Temperature of 50℃ humidity of 20~30% work 16 hours at room temperature the shelving of 1 hour test no abnormal adverse

4.5  低温动作 Low-temperature operation

Temperature of -20℃ work 16 hours at room temperature  the shelving of 1 hour test no abnormal adverse

4.6  耐湿性 Humidity  Test

Temperature of 40±2℃ humidity of 90~95% for 96 hour at room temperature the shelving of 1 hour the test no abnormal adverse

4.7  温/湿度循环试验
Compositetemperature/humi dity cyclic test

Refer to JIS C 60068-2-38 The loudspeaker shall be subjected to 10 continuous cycles the loud speaker shall be stored at standard atmospheric conditions for 6 H for recovery After the test should be able to meet the requirements of section 3.7 There shall be no distinct deformation in appearance.

4.8 振动测试 Vibration test

To be no interference in operation after vibration 10HZ~55HZ for 1 minute full amplitude 2mm for 8hours at X,Y,Z, three axises
After the test should be able to meet the requirements of section 3.7 There shall be no distinct deformation in appearance.

 4.9 跌落测试 Drop test

Packaging The speaker from height 60 CM Down to concrete floors 。in five directions Trial one cycles After the test should be able to meet the requirements of section 3.7。

5.1 磁束密度 Flux Density

/  Gauss

5.2  磁  铁      Magnet

  Nd-Fe-B:    Ferrite:    

5.3 重  量 Weight

  / G