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Dirty-South Blues Harp forum: wail on! > Superlux D112 with ceramic element
Superlux D112 with ceramic element
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Bugfan
4 posts
Jun 06, 2014
6:59 PM
In case anyone is wondering about putting another element in a superlux D112 shell. Yes its fairly easy...sort of!
I have put a Astatic 564 element from a Astaic 511 CB mic ($22 off ebay!) from the 60's in mine. I hade to make my own gasket as it was prob quicker than getting one from the states to Australia. The gasket top is the same size but the gap where the element sits is to big. I took a mould of the gasket in plaster and then used a bit of plumbing pipe with a ridge on it the right thickness of the astatic element.I mixed half a teaspoon of cornflour with a teaspoon of acid cure silicone caulking and put in the mould, pushed in my pipe and then 3 hrs later I had my gasket. The cornflour makes the silicon cure much faster. I put in a 1 meg pot - a 16mm square conductive plastic one ( I can't find a 5 meg anywhere )and it was done. Sounds good. Looks factory.
I have also just bought a Shure 440 with a '64 99B86 C.R element in it. ( has a strange metal cap fixed over the element but doesn't seem to change sound. I put a 100k pot into the old base fixing hole and threaded the cable out through the wiring port - with a wire spring strain relief from a 1/4 jack. Works well . Quite bright in comparison to the Astatic but I have just sealed the vent hole with epoxy as it gets strong feedback with that not blocked. Might deepen the tone now.
Bugfan
5 posts
Jun 09, 2014
5:54 PM
Ahh...must be something I am missing - the cap was crimped over and around the mic face . I didn't want to prise it of for fear of damaging the mic. Is there a safe way to do this - or does it even matter if it stays on?


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