One of our SM57's is messing up.

I opened it up (unscrewed the halfs) and wiggleda couple wires. The yellow wire cam loose easily. Easy fix, I thought. So I soldered it back to the post on the capsule.

I plugged it in to check it and it sounds 'tubular'. Very middle range tube sound.
It is also measuring a bit weaker than other dynamic mics I have here to compare with. Unfortunately I didn't bring another home 57 to compare directly.
Should there be continuity from each post on the transducer (capsule) to each of the three prongs of XLR?
Nothing is grounding to the case. I checked that with continuity test.
Green wire looks like it may have been 'crimped' as I observe a flat spot in it. If shortened to eliminate the flat spot it will be too short to solder. It appears all three wires go thru the foam down to the XLR connection, is this correct?

It is weird in that it 'works' but does not sound correct.

Any ideas?

FWIW the top half of the recorded signal will clip before the bottom half when displayed as a wavform..
seems like a phase issue, but I didn't change any wire connections (only resoldered one wire).

Last edited by rharv; 04/10/10 01:34 PM.
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