Manufacturer: B&W Bowers & Wilkins
Model: 801 D (D1)
Years of manufacture: 2004 -2009
Made in: England
Colour: Black Ash, Piano Black (extra), Cherry, Rosewood
Dimensions: 1.192 x 506 x 682 mm (H x W x D)
Weight: 118 kg
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Type: 3-way bass reflex, floorstanding speaker
Chassis:
Woofer: 1x 380 mm (Rohacell cone).
Midrange driver: 1x 150 mm (FST Kevlar fabric cone)
Tweeter: 1x 25 mm (D1-diamond dome)
Recommended amplifier power: 50 - 1000 W
Efficiency: 90 dB (2.83 V, 1 m)
Frequency response: 29 - 28,000 Hz (+/-3 dB)
Transitional ranges: 350 / 4,000 Hz
Impedance: 8 Ohm (minimum according to B&W = 3.5 Ohm, therefore the true impedance according to DIN/IEC = 4 Ohm!)