Rare Pair of Sony compact active speakers in excellent looking and playing condition. They sound very good, like a 2-way system. Type: single driver loudspeaker system Full Range: 1 x 106x106 mm flat diaphragm Enclosure: bass reflex Dimensions: 134 x 201 x 190mm Weight: 3.5kg Note: 20 watt power amplifier Year: 1986 DISTORTION: With 4 ohm loads, both channels driven, from 60-15,000 Hz; rated 9 watts per channel minimum RMS power, with no more than 10% total harmonic distortion from 10 milliwatts to rated output. Amplifier section 20 W+20 W (Peak) Power output 12 W+12 W (at 10% harmonic distortion) L-shaped stereo unimatch plug Impedance 100 ohms at 1 kHz Input Speaker section System Full-range, enclosure type (bass reflex) magnetically shielded design Full-range: 106 x 106 mm (41/4 x 41/4 inches) Speaker unit Nominal inpednace 4 ohms Nominal 20 W +20 W Maximum 40 W +40 W Power handling capacity General 120 V AC, 60 Hz Power requirements DC IN 12 V jack accepts: optional Sony DCC-16AW car battery cord for use with 12 V car battery Approx. 134 x 201 x 190 mm (w/h/d) (53/8 x 8 x 71/2 inches) not incl. projecting parts Dimensions Left speaker: Approx. 3.5 kg (7 lb 12 oz) Weight Right speaker: Approx. 2.1 kg (4 lb 10 oz) Cover seal (4) supplied accessories Felt cushion (8) Speaker cord (1) Screw (2) Design and specifications subject to change without notice. Carefully shipped insured