Speaker System (400-4071) Specifications Faxback Doc. # 16440 Input Power (Nominal):..................................................10W Free Air Resonance Frequency:.............................55 Hz +/- 1/Hz/1V Mean Sound Pressure Level:.............................89 dB +/- 2 dB/1.0 m at 300, 400, 500, 600 Hz Frequency Range:......................................................5 KHz Deviation of SPL:.................................................18 dB max Voice Coil Impedance:.........................4.0 ohms +/- 15% at 200 Hz/1V Magnet Material:....................................................Ceramic Magnet Weight:......................................................11.6 oz Gap ID:............................................................29.60 mm Surround:..............................................................Free Finish:................................................................Zinc Weight of Loudspeaker:..............................................1.300 g (ALL-08/11/95)