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In Reply to: RE: Wiring outlet box posted by jea48 on April 15, 2017 at 09:52:42
The state of the art Oyaide WPC-Z milled aluminum mounting bracket with carbon fiber faceplate depends on a very rigid coupling of the massive aluminum bracket via both mounting screws to an AC outlet box, and for both ears of the AC outlet ground strap to be rigidly affixed to the aluminum bracket with four screws, two screws for each ear. I would not try to insulate one of the ground strap ears, nor try to insulate one of the u-shaped slots of the aluminum bracket in search of better audio performance. I would have to read a credible report about the exact sonic betterment that such a method might provide before I attempted to experiment for myself. Perhaps Al's audio system was so far superior to mine, that even the most subtle differences were clearly audible to his ear, but that's just my 2 cents worth. YMMV
Thanks for the detailed response with respect to the WPC-Z. I've been using mine for several years, and I'm not keen to alter it. I'm leaving it uninsulated.
"I am pretty sure Al was not using the WPC-Z plate. Just a guess he was using a standard non metallic duplex cover plate."
I know Al did not use the WPC-Z, since he came late to experience the benefits of an Oyaide AC outlet. He replaced a special Pass & Seymour with an Oyaide SWO-GX and liked it very much.
"Looking at the WPC-Z plate mounting it would still be possible to try Al's experiment. For the test an insulator would be placed between the back side of the WPC-Z plate and the metal wall outlet box. A nylon 6/32 screw would be installed on the opposite end of the duplex equipment ground screw of the WPC-Z plate to support that end of the WPC-Z plate to the wall outlet box. I believe that would still break one end of the one pole inductor that AL spoke of in his post/s."
What kind of insulator might you have in mind? Before I would place a compliant insulation layer, which would partially decouple the structure (not something I want to do), I wouldn't want anything to get in the way of the most rigid interface structure as possible. The use of a nylon screw kills the whole recipe for me.
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