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In Reply to: RE: Have you seen GIK's new diffusers? posted by pictureguy on September 22, 2016 at 11:11:23
Well I call it Styrofoam, in general terms, as opposed to wood. But the manufacturer says it's " high density polystyrene", and "high density EPS", so you can discuss with him what the specifics are.I can tell you this. In order to fit and sink in the diffusers into the oak frames I built for mine, I had to flip over the diffusers and plane a good 1/4" off the backs. No unwanted damage what so ever.
One important point is these must be painted in order to achieve their full potential. They will absorb more than reflect when left unpainted.
See my post (reply 155) on this Audio Circle thread:
http://www.audiocircle.com/index.php?topic=116052.140Also on the next page of that thread, the guy from SRL discusses his product.
Edits: 09/22/16Follow Ups:
EPP is Expanded Poly Propolene. It is VERY tough and will not crack like styrofoam or any of the styrene compounds.
Good luck SOURCING EPP, though. NO hobby shop will routinely carry it. They would ReSell far less since it is so darn DURABLE.
EPP is a closed cell foam and will take paint and is immune ot most solvents. I'll HOT GLUE it together when ready. I might not even use a BACKER which is an extra part NOT needed if I'm correct.
I can buy 24" x 48" sheets 2" thick which I can EASILY cut with an electric carving knife. I'm making the cutting jigs right now.
I think many would agree that WOOD is simply too heavy and ends up with both mounting problems and resource use justifications. Though I suspect, for the last, the synthetics are WORSE.
If you don't think EPP is 'special', check out the videos at Crash Test Hobby where a flying wing
is repeatedly flown INTO A BRICK WALL
I think the 1.3# per cubic foot stuff would work fine.
Too much is never enough
LOL, awesome videos. If I had a nosy neighbor with one of those drones buzzing around my house, that Assassin would be perfect to "accidentally" take it out. :)What design program are you going to use? QRDude is pretty popular:
Edits: 09/22/16
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