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	Speaker - K-15E08A-0W Spec. ITEM   SPECIFICATIONS 1 Type Dynamic speaker 2 Dimension External diameter 15 mm 3 Rated Input Power 0.5 W 4 Max. Input Power 0.8 W 5 Impedance 8 ohm ± 15% at 2000Hz 6 Resonance Frequency (Fo) 800 Hz ± 20% at Fo, 1V 7 Sensitivity (S.P.L.) 78 dB(W/m) ± 3 dB at AVE 1.0K,1.2K,1.5K,1.8K(Hz)     92dB (0.5W/0.1m) ± 3 dB 8 Frequency Range Fo – 20KHz 9 Distortion Max 8 % at 1K Hz,0.5W 10 Voice Coil Diameter 8.65 mm 11 Magnet Rare earth permanent (Nd-Fe-B) magnetΦ7.9 x 1.35mm 12 Weight 2g ± 0.2g 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 – 0.5W 15 Buzz, Rattle, etc. Should not be audible at 2V 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℃