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Rectangular / Oval / Square Speaker  
 

 

Round (10-28mm) Round (29mm above) Rectangular Dual

 

Rectangular Speaker - AK-714108BC-4
 
Square speakerrectangular speaker
 
 
Type Dynamic speaker
Dimension External diameter 71*41 mm
Rated Input Power 4 W
Impedance 8 ohm ± 15% at 1K Hz
Sensitivity (S.P.L.) 81dB(W/m) ± 3 dB at AVE 0.6K,0.8K,1K,1.2K(Hz).
  100dB(1W/0.1m) ± 3 dB
Distortion Less than 10 % at 1K Hz 4 W
Max. Input Power Must be normal at 5W white noise for 1 minute.
Voice Coil Diameter 13.28 mm
Magnet Rare earth permanent (Nd-Fe-B) magnet Φ12.5xmm
Weight 38g ± 4g
Appearance Should not exist any obstacle to be harmful to normal operation; damages, cracks, rusts and distortions, etc.
Operation Test Must be normal at program source –4W
Polarity When positive voltage is applied to the terminal marked (+), diaphragm should move to the front.
Terminal Strength Capable of withstand 1kg load for 30 seconds without resulting in any damage or rejection.
Load Test 4 W white noise is applied for 96 hours and satisfy the test listed on item 05,06,13,15
High Temp. Test Keep 96 hours at +70℃±3℃ and leave 3 hours in normal temperature and then check
Low Temp. Test Keep 96 hours at -20℃±3℃ and leave 3 hours in normal temperature and then check
Humidity Test Keep 96 hours at + 60℃±3℃ relative humidity 95% and leave 3 hours in normal temperature and then checked.

 

Introduction of Speaker