Great looking and very good sounding, vintage heavy weight monitor speakers, designed and build in the U.K., by the world famous speaker company, Bowers and Wilkins They play music with, with lots of energy and details, and got that authority (bass-presence) that you want to. make things sound "believable" or "real". Manufacturer: B&W Model: DM 110i Year of manufacture: 1986 - 1988 Made in: England Colour: Black Ash Dimensions: 490 x 260 x 250 mm (H x W x D) Weight: 15 kg (pair) Technical Data Type: 2-way bass reflex, shelf speaker. Chassis: Low-midrange driver: 1x 200 mm Tweeter: 1x 26 mm (dome) Power handling (nominal/music): Recommended amplifier power: 10 - 75 W Efficiency: 90 dB (2.83 V, 1 m) Frequency response: 70 - 20,000 Hz (±3 dB) Impedance: 8 Ohm