Advanced Acoustic Technology Corp.
Micro / Mini Speaker Manufacturer
Round (29mm above)
Mylar Speaker : AK-4508BB-2
External diameter 45 mm
Rated Input Power
8 ohm ± 15% at 1000Hz
81dB(W/m) ± 3 dB at AVE 0.8K,1.0K,1.2K,1.5K(Hz).
100dB(1W/0.1m) ± 3 dB
Less than 10 % at 1000Hz 1.0W
Max. Input Power
Must be normal at 2.0W white noise for 1 minute.
Diameter 13.5 mm
Rare earth permanent (Nd-Fe-B) magnet Φ12.5 x 1.5mm
10.2g ± 2g
Should not exist any obstacle to be harmful to normal operation; damages, cracks, rusts and distortions, etc.
Must be normal at program source – 1.0W
When positive voltage is applied to the terminal marked (+), diaphragm should move to the front.
Capable of withstand 1kg load for 30 seconds without resulting in any damage or rejection.
1.0 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
Keep 96 hours at + 60℃±3℃ relative humidity 95% and leave 3 hours in normal temperature and then checked.
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
Introduction of Speaker