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In Reply to: RE: 1/2" X close rigid aluminum nipple posted by Tweaker456 on December 17, 2014 at 13:41:46
Ok jea and Duster , thanks. The compression fitting was steel. TweakerSorry, what steel compression fitting?
The two boxes will connect together using an aluminum 1/2" X CLOSE rigid nipple threaded into the tapped 1/2" pipe thread hubs on the two boxes.
For the cord strain relief connector buy one made from nylon or from high impact plastic.
example,
Goggle,
https://www.google.com/search?q=plastic+or+nylon+1/2"+threaded+cord+strain+relief+connector&rlz=1T4GGLL_enUS413US413&biw=873&bih=618&tbm=isch&tbo=u&source=univ&sa=X&ei=igOSVKrzEIqdNpC7gLgO&ved=0CFsQsAQLocknut is not needed.
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An added note, if you decide to go with the bell boxes cut off the 6/32" support screws that fasten the duplex receptacle to the box, or just buy shorter ones about a 1/2" long. Or buy a 6/32" bottom end tap and run it through the existing 6/32" tapped holes in the boxes. Sometimes 1" or 1-1/4" 6/32 screws get a little tight toward the end of screwing them into the boxes.
Jim
Edits: 12/17/14Follow Ups:
There was an ad for a steel compression connector in the info you sent me on the single gang box. It wont be used. Looks like Duster likes aluminum for vib damping over plastic for this project. Tweaker
Jim, will the Bell aluminum boxes sound better that plastic boxes in your experiance if you ever abed the things. I could just string another cheap plastic box and hide the rig but if these boxes sound much better I'd go with them. I'd also go with brass screws. Thanks, Tweaker
Sorry, I can't help you there. Duster may have some experience using a plastic box.
Jim
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IMO, a plastic box may be an expedient way to build a low-budget DIY power distributor, but an AC outlet mounted on a plastic box doesn't make sense from an audiophile POV since it won't provide the kind of rigid high-mass resonance damping and electrical shielding that an aluminum box can provide. The benefit of a rigid thick-walled aluminum box is directly associated with damping detrimental resonance produced at the AC socket contacts/AC plug blades interface when firmly affixed to the aluminum box via the backstrap of the AC outlet, especially the two ground prongs of a duplex outlet directly fastened to the backstrap. The rigid high-mass brass backstrap of an Audio Grade AC outlet like that of an Oyaide R1 is of great benefit to the sound, especially when mounted on an Oyaide WPC-Z aluminum wall bracket. Many users report that the Oyaide WPC-Z improves the sound as much as an Oyaide AC outlet does. YMMV
Thanks Duster, I'll likely go with the inexpensive Bell aluminum boxes instead of plastic. Tweaker
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