LEAK Sandwich
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The LEAK Sandwich was an innovative loudspeaker design introduced by the English hi-fi company H. J. Leak & Co. in 1961. Harold Leak engaged Don Barlow, who had devised a way of making the cone of the loudspeaker from expanded polystyrene foam sandwiched between two thin layers of aluminium. This made it both very light and extremely stiff, and correspondingly accurate in sound.
Contemporary publicity photographs show Harold standing calmly on top of one of his sandwich cones to demonstrate its exceptional rigidity. The speaker was innovative in other ways as well and was produced, relatively unchanged, for about 10 years.
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[edit] External links
- Unoffical page describing the Leak "Sandwich" speaker(search for "sandwich")
