MODEL??	FBF40-2
DIMENSION??	40mm  x  7.5mm
VOICE COIL IMP??	8 ohm
SOUND PRESSVRE LEVEL?¡§S.P.L????	87 dB
RESONAT FREQUENEY??	510 Hz
EFFECTIVE FREQUENEY??	fo-10000 Hz
NOISE POWER??	0.25 w
MAGNET SIZE AND ASSEMBLY??	27mm Ferrite