01

Type

Dynamic speaker

02

Dimension

External diameter 1507mm

03

Rated Input Power

0.7W

04

Impedance

6ohm±15% at1KHz

05

Resonance Frequency (Fo)

950 Hz±20% at  Fo, 1V

06

Sensitivity (S.P.L.)

87dB(0.5W/0.1m)±3 dB

at AVE 

0.8K, 1.0K,1.2K,1.5K(Hz).

07

Frequency Range

Reter to additional sound respponse graph

08

Distortion

Less than 10 % at1000Hz0.7W

09

Max. Input Power

Must be normal at1.0W white noise for 1 minute.

10

Voice Coil

Diameter9.5*4 mm

11

Magnet

Rare earth permanent (Nd-Fe-B) magnetΦ9 x 3.5mm

12

Weight

0.9g±0.3g

13

Appearance

Should not exist any obstacle to be harmful to normal operation; damages, cracks, rusts and distortions, etc.

14

Operation Test

Must be normal at program source0.5W

15

Buzz, Rattle, etc.

Should not be audible at2.3V sine Wave between Fo to 20KHz

16

Polarity

When positive voltage is applied to the terminal marked (+), diaphragm should move to the front.

17

Terminal Strength

Capable of withstand 1kg load for 30 seconds without resulting in any damage or rejection.

18

Load Test

0.7W white noise is applied for 96 hours and satisfy the test listed on item 05,06,13,15

19

High Temp. Test

Keep 96 hours at +70℃±3℃ and leave 3 hours in normal temperature and then check

20

Low Temp. Test

Keep 96 hours at -20℃±3℃ and leave 3 hours in normal temperature and then check

21

Humidity Test

Keep 96 hours at + 60℃±3℃ relative humidity 95% and leave 3 hours in normal temperature and then checked.

22

Drop Test

Drop the speakers contained in normal box onto the board 20mm thick 10 times from the height of 0.75m and then should satisfy the test listed on item 13 and 15