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loudspeakers in closed boxes and room Aspects

http://history.sandiego.edu/GEN/recording/villchur.html

I diffusori a sospensione pneumatica.

la storia

The hi-fi market was starting to expand in the early 1950s, with new sensitive pickups and amplifiers capable of reproducing the full dynamic range of the new LP record. But speaker designers were still struggling with the problem of extended, low-distortion bass. Villchur decided to try a radical new approach: "Instead of making one
Edgar Villchur in lab ca. 1965

more attempt to unravel the Gordian knot, I cut it. I used a different kind of elastic restoring force, one derived from an air spring,
Edgar Villchur lab in ca. 1965

INSTEAD of the mechanical springs of the suspensions.Thus, the acoustic suspension loudspeaker is an Obvious and simple system. You are Merely substituting an Essentially linear air spring for a set of nonlinear mechanical springs. "(Birchall 1993)

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Allsison The speakers were the first to consider the placement in the home and their effects on low. Today

incredibly not take them into more 'account, but here are the phrases "depends on how you will play home'" "Keep them away from the walls" "acoustic devices used tube traps (in thousands of hits di eu) per migliorare il suono"

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