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<blockquote data-quote="Frank Koenig" data-source="post: 138342" data-attributes="member: 416">Re: Lycra vs.&nbsp; Fabric billed as &quot;acoustically transparent&quot;Well, it&#039;s kind of storage and kind of operation. But it&#039;s not a &quot;powered&quot; speaker, in any case&nbsp; :razz:&nbsp;I use the wedges, among other places, at a pretty remote site up in the Sierra Foothills. Once we set up (outdoors) we leave the gear out over a couple of nights. Given all the other rodent problems (mostly mouse but also woodrat) I&#039;ve had there, critters getting into speakers is a very real concern. As an aside, I spent several hours last weekend on a creeper under a front-end loader repairing wiring damaged by mice. They not only chewed through several wires but actually carried off an ~10 inch long section not to be seen again.As for the electroacoustic situation, the wedges use a 12 in. coax (BMS 12CN680) with a circular ducted port (3&quot; ABS DWV) on the speaker baffle. My (not so clever) idea was to cover the entire front with the common ~65% open area perforated steel backed with grille cloth. There is about a 1 in. space between the baffle and the grille, so it&#039;s not quite as bad as blanking off the port directly with the grille. Nevertheless, installing the grille has a large effect on the impedance curve around Fb. I don&#039;t have good measurements of the effect on the actual response, but they&#039;re coming. If it&#039;s too bad, I may relocate the port to another surface and keep the mice out with 1/4 in. hardware cloth, or the like, which I hope will cause less resistance. I want to keep the cloth-backed perf steel over the driver to help keep the usual monitor detritus out of the horn. It&#039;s a project...--Frank</blockquote>

[QUOTE="Frank Koenig, post: 138342, member: 416"] Re: Lycra vs. Fabric billed as "acoustically transparent" Well, it's kind of storage and kind of operation. But it's not a "powered" speaker, in any case :razz: I use the wedges, among other places, at a pretty remote site up in the Sierra Foothills. Once we set up (outdoors) we leave the gear out over a couple of nights. Given all the other rodent problems (mostly mouse but also woodrat) I've had there, critters getting into speakers is a very real concern. As an aside, I spent several hours last weekend on a creeper under a front-end loader repairing wiring damaged by mice. They not only chewed through several wires but actually carried off an ~10 inch long section not to be seen again. As for the electroacoustic situation, the wedges use a 12 in. coax (BMS 12CN680) with a circular ducted port (3" ABS DWV) on the speaker baffle. My (not so clever) idea was to cover the entire front with the common ~65% open area perforated steel backed with grille cloth. There is about a 1 in. space between the baffle and the grille, so it's not quite as bad as blanking off the port directly with the grille. Nevertheless, installing the grille has a large effect on the impedance curve around Fb. I don't have good measurements of the effect on the actual response, but they're coming. If it's too bad, I may relocate the port to another surface and keep the mice out with 1/4 in. hardware cloth, or the like, which I hope will cause less resistance. I want to keep the cloth-backed perf steel over the driver to help keep the usual monitor detritus out of the horn. It's a project... --Frank [/QUOTE]

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