SM57 mod

jmpizzoferrato · Post by **jmpizzoferrato** » Thu Apr 13, 2006 9:46 pm

i used the modded 57 in the following situation:

ampeg b-25 with a green day pbass model. into a marshall 4x12, mic'd with the 57 modded, into a neve 1064, into a dbx 160SL. total success. aftr we tracked that, we mixed the song. the bass fit in absolutely beautifully! i'm totally using this modded 57 on everything!

qbert1 · Post by **qbert1** » Fri Apr 14, 2006 12:35 am

The article suggests there is a Lundhal Transformer that one could use to replace the original one (albeit in a seperate box). Anyone know which one would work? I'm a dunce with specs.

A-Barr · Post by **A-Barr** » Fri Apr 14, 2006 7:16 am

I read on Prodigy Pro that you want a 13 ohm to 300 ohm transformer... let us know if one turns up! Building a phantom-powered FET impedance converter, like what's in the R-122, seems like it might be a better option if you can figure out how to do it.

KWEBB · Post by **KWEBB** » Mon Apr 17, 2006 2:31 am

Would leaving on the phantom power on the modded 57 fry it?
Like what I've heard can happen to a D112. Which I think is transformerless

A-Barr · Post by **A-Barr** » Mon Apr 17, 2006 9:22 am

I'm pretty sure it would! If you want to put some circuit protection, you could run the signal through some cap's, that would certainly change the sound too, anywhere from "much worse" to "warmer and deeper," (maybe) depending on what type of cap you used. This is crazyness in my opinion, I'd just be careful around the ol' +48 switch.
...If you want a really funky way to do it, put some diodes in to stop the DC. This should also intoduce a fair bit of distortion - diode clipping is the basis for most fuzz/overdrive/whatever boxes....

Uncle Dub · Post by **Uncle Dub** » Sun Apr 26, 2009 4:30 pm

Today I was salvaging the transformer from a '57 for another project, I found rather than boiling it in a pan of water, after removing the capsule and XLR, I put it in the oven on a piece of foil for 15 minutes at the lowest setting the oven had, 150 degrees Farenheit, and the transformer just pulled out gently without any mucking about with drill bits, and you can just turn the body of the mic upside down and clean the glue out with a rag.

ubertar · Post by **ubertar** » Sun Apr 26, 2009 5:06 pm

Shure made two transformerless versions of the 57... one is the DY45G. It has the black/silver colors of a 545. The other is the sm77. They used aluminum instead of copper for the voice coil, so they could have more windings without adding weight, to make up for the lost input from the lack of transformer.

operator_tape · Post by **operator_tape** » Mon Apr 27, 2009 2:49 pm

there are mods that are sold my mercenary that have the tab-funkenwerk tansformers in the mod. Its about 75$ though. I think its pretty good. I am thinking of pickinh up two of these for my sm57's

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