Nice set of Dual 3-way speakers Good working order. Rubber edge woofers last for life. Big 10" woofer for deep bass sound Dome mid and tweeters for fast accurate smooth sound stage. Manufacturer: Dual Model: CL 630 Years of manufacture: 1982-1983 Made in: Germany Color: oak, black Dimensions: 315 x 500 x 260 mm (W x H x D) Weight: 10 kg New price approx.: Technical data Design: 3-way closed compact loudspeaker Chassis: Bass: 245 mm Midrange: 30 mm (dome) Treble: 20 mm (dome) Load capacity (nominal/music range): 90/120 watts Efficiency: 86.5 dB Frequency response: 25 - 20,000 Hz Transition ranges: 900/2500 Hz Impedance: 4 and 8 ohms (separate terminals) Special features Recommended room size: 15 - 40 m² electronic protection circuit against thermal overload of the tweeter system Little signs of use