Britain's Best-Selling Speaker HighQuality Sound and Tasteful Design Mission, Britain's top-selling Speaker brand, has equipped the bookshelf model 771 with features and technology found throughout the 77 series, and is a perfect match with the D-F100 Components The Aerogel 5 1/4" bass drive unit provides extended deep bass response with superb midrange clarity. The 1" soft fabric dome tweeter is polymer-coated for crisp, extended high frequency response, and is mounted to the baffle via a unique leaf-sprung suspension to eliminate driver interaction. The 771's 6 1/2 liter tuned reflex enclosure is finished in real wood veneer, with a beautiful rosewood tone satin finish.