The Bose 401 Series direct/reflecting speaker was manufactured in the late 1980s and early 1990s. It is a floor-standing speaker, a bit different from the well-hidden Bose satellite speaker, and has a triangularly shaped footprint rather than the typical box shape of most floor-standing speakers. Using Bose's direct/reflecting technology, the Bose 401 can create a wider soundstage than most other speakers by reflecting sound from an additional speaker driver off of an adjacent wall.
Each Bose 401 speaker weighs approximately 28.5 pounds. It's essentially an isosceles triangle shape with a base that is 11.1 inches wide at its widest point and 11.1 inches tall at its tallest point. The entire speaker tower's height is 29.6 inches.
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Each 401 speaker contains three drivers. It has one 2-inch tweeter and two 6.5-inch woofers. Each woofer is located under one of the two grilles on the speaker's two front faces.
With the ability to handle anywhere from 10 to 200 watts per channel, these speakers will work with just about any amplifier or receiver. Given that they are rated from 4 to 8 ohms, you may want to use an amplifier which runs toward the high end of that range to ensure that it can provide enough power when the speaker is presenting a difficult 4 ohm load.