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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: Subtle, but rich & deep-what happened to acoustic suspension loudspeakers? posted by waVeman on October 23, 2001 at 22:00:52:
I'm not sure acoustic suspension has really "disappeared" so much as been "transmogrified". Subwoofers that are descibed as "sealed enclosre" are essentially a specialized variant on the priciple. I'm thinking of Sunfire and M&K as examples. If I've right in supposition, acoustic suspension lives on in a number of sat/sub products.This is not so crazy if you consider one of the aspects of the was that the bass roll off was a result of increasing inefficiency rather than the an inherent inability to produce bass below a given point. Alison took advantage of this by selling an equalizer with his speakers that had a boost curve inverse to the speaker's roll off curve. The air trapped inside the sealed box protected the cones from damage but the need to compress it required a lot of power. (This was beyond my budget then, but my idea of heaven was a place where everybody got a pair of Alison One's and a Phase Linear 700!)
The same principle was capitalized on by NAD. They sold some receivers and amps with a bass extension circiut that was intended to be approximately the inverse of the roll off curve of a typical small acoustic suspension speaker. It was definatelt NOT the equivalent of the "Bass Boost" button one sees around today. In a small room it worked suprisingly well for me with a pair of Smaller Advents.
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Follow Ups
- Re: Subtle, but rich & deep-what happened to acoustic suspension loudspeakers? - sam9 09:57:36 10/26/01 (0)
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