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In Reply to: RE: Compression drivers used outdoors posted by hollowboy on February 01, 2017 at 16:39:44
Mount the drivers in a bag filled with SF6, a heavier-than-air gas available at a welding supply store.
They won't corrode and loses their HF response.
Follow Ups:
...didn't Dayton Wright enclose one model of their high power electrostats in a bag filled with SF6 (sulphur hexaflouride)? IIRC, this was done because SF6 is a better dielectric/insulator material than an equal gap of air thus allowing higher polarizing and drive voltage. I also recall that those speakers were quite problem prone due in part to leakage of the SF6.
".didn't Dayton Wright enclose one model of their high power electrostats in a bag filled with SF6 (sulphur hexaflouride)? "
Yep.
" I also recall that those speakers were quite problem prone due in part to leakage of the SF6."
It's heavier than air, so it wasn't that big of a problem.
A little cling-wrap in the throat and seal up the back of the 2445 and you might be fine without the SF6 (I've done that on floor wedges).
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