[quote name='P-T-P' post='922379' date='Aug 12 2010, 09:49 AM']Found it...
[i]"That brings up another question that comes up all the time. What’s the real difference between an SM57 and an SM58? There are actually a fair number of myths and misconceptions about what the difference really is.
"The basic difference is the grille. The other parts -- the diaphragm and voice coil combination, the magnet, the transformer that’s in the handle, the handle itself, the closing ring that surrounds the cartridge – are identical.
"In the SM58, the ball grille with the foam lining provides an extra degree of pop protection and wind protection. The SM57 has a much more compact grille arrangement that doesn’t provide nearly as much protection against blast or wind. But the basic frequency response and polar patterns are almost identical – there is only a slight difference in high frequencies where the shape of the grille starts to affect the response. But that probably doesn’t kick in until 13, 14 or 15 kHz – something like that."[/i]
From here [url="http://www.shurenotes.com/issue30/article.htm"]http://www.shurenotes.com/issue30/article.htm[/url][/quote]
I've read this, in fact it was talking about this article which prompted us to make this video, from what we found they're very similar but the 58 seems a bit warmer and the 57 has a bit more crispness to it.