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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: Audiokinesis The Swarm Speakers posted by Young-Ho on April 3, 2007 at 09:33:42:
You are absolutely correct, the scattered multiple subwoofer configuration is based pretty much entirely on conversations with Earl Geddes. In fact, Earl has applied for a patent on a subwoofer system whose principles I'm using - and just for the record I built the Swarm with Earl's knowledge and with permission to incorporate his concepts. Several other researchers have recommended multiple subwoofers, though usually with more symmetrical placement (Welti, Griesinger).The woofers are nominally "6 inch" units. The frame diameter is nearly 7 inches, and the cone area is 140 square centimeters. Four of them would be 560 square centimeters, which is about right for a single 12" woofer.
The woofers I use have a theoretical maximum linear excursion of 13 millimeters. With the vented alignments I use, they don't reach 13 millimeters excursion anywhere within their passbands, and the plate amp has a high pass filter that should protect against over-excursion below the tuning frequency.
Duke
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Follow Ups
- Earl's contribution - Duke 19:34:38 04/03/07 (0)
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