These speakers are in very good condition and were sold in the 1970s. They are fitted with new edges around the sub and everything works. The switches at the backs work perfectly and the difference in sound is clearly audible (high and mid tones). Casing in good condition, no missing pieces, of course some superficial scratches (a new layer of varnish is preferable after almost 50 year). The speakers have always been stored carefully, therefore everything is still in a good condition. The dust covers are not torn and everything is original. The edges were worn but have been renewed, so they are currently as good as new. Ne dents or tears in the speakers. Original sticker on one of the subs has come loose, this is put in a pouch at the back (for the sake of originality). Pick up is preferred but shipping is also possible. Shipping costs for two parcels. Acoustic Research AR-3a Specifications: Drive Units: 305 mm (12 in) acoustic suspension woofer, 38 mm (1 1/2 in) midrange hemispherical dome, 199 mm (3/4 in) high-frequency hemispherical dome. Crossover: 575 Hz, 5000 Hz Impedance: 4 ohms nominal Controls: Midrange and high-frequency driver level controls Amplifier: Up to 100 watts per channel Size: 356 x 636 x 289 mm deep ( 14 x 25 x 11 3/8 in) Weight: 24 kg (53 lb) Woofer resonance: Free air 18 Hz, in enclosure 42 Hz Volume of enclosure: 48.2 litres (1.7 cu ft)