Advanced Acoustic Technology Corp.
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Round (10-28mm)
Round (29mm above)
Rectangular
Box / Dual
Micro Speaker : AK-2808BB-18
ITEM
SPECIFICATIONS
1
Type
Dynamic speaker
2
Dimension
External diameter 28 mm
3
Rated Input Power
2.0 W
4
Max. Input Power
2.2 W for 1 minute.
5
Impedance
8 ohm ± 15% at 2 KHz
6
Resonance Frequency (Fo)
650 Hz ± 20% at Fo, 1V
7
Sensitivity (S.P.L.)
76 dB(W/m) ± 3 dB at AVE 1.0 、1.2、1.5、2.0 KHz.
96 dB (2.0W/0.1m) ± 3 dB
8
Frequency Range
Fo – 20K Hz
9
Total Harmonics Distortion
Less than 10 % at 1 KHz,1.0V
10
Voice Coil
Diameter 13.5 mm
11
Magnet
Rare earth permanent ( Nd-Fe-B ) magnet Φ12.5 x 1.5mm
12
Weight
7.4g ± 0.5g
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 source 2.0W
15
Buzz, Rattle, etc.
Should not be audible at 4.0 V 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
Temperature
Operating temperature: -20℃ to +60℃
Storage temperature: -30℃ to +70℃
Introduction of Speaker