SM57 & SM58: Difference in frequency response curve!

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turnitdown said:
The SM57 uses a dialectric w/ a coefficient of .48.
The SM58 uses a dialectric w/ a coefficient of .62.

The difference of .14 in the dialectric accounts for the 10hz frequency response differential, as well as pronounced "voice-iness" in the SM58 which has made it the best selling stage mic ever.

The SM57 on the other hand, has a lower cofficient, giving a sense of "wood-iness" which makes it the perfect mic for wooden Marshal cabinets and the like.
;)
Click to expand...

Could you please elaborate, how so?
 
Marik said:
Could you please elaborate, how so?
Click to expand...

Sure...
It all has to do with the alignment of the flux capacitors used.
The "early" Shure mics used an alignment of 11 degrees.
The "later" (post 9/11) mics used an alignment of 13 degrees.

This, in conjunction with the dialectric, caused the tonal characteristics I mentioned.

Hope this clarifies things a bit...

Mike Michaels
Owner, Mike's Mic Warehouse
Your Mic Source
www.micsmics.com
 
turnitdown said:
Sure...
It all has to do with the alignment of the flux capacitors used.
The "early" Shure mics used an alignment of 11 degrees.
The "later" (post 9/11) mics used an alignment of 13 degrees.

This, in conjunction with the dialectric, caused the tonal characteristics I mentioned.

Hope this clarifies things a bit...

Mike Michaels
Owner, Mike's Mic Warehouse
Your Mic Source
www.micsmics.com
Click to expand...

Gottcha! Still not sure about "alignment" and "flux capacitor", but now the picture is clear!!!
 
Maybe this will help clarify the situation.
 

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That's perfectly clear......... except for the fact that the 57/58's are dynamics and don't use a battery or phantom power.......!?!?!

:confused:
 
Thanks for posting that graphic.

I was starting to think that people on this board thought I was kidding.... But as you've just proven, everything I said was true...

:D
 
Blue Bear Sound said:
That's perfectly clear......... except for the fact that the 57/58's are dynamics and don't use a battery or phantom power.......!?!?!

:confused:
Click to expand...

Yes they do. All mics have to get their powere from somewhere.
Whether it's 48v phantom powering, ni-cads, 9 volters, Celine Dion's voice etc...

Shure dynamics use a non-user replaceable lithium number. But it's in there. Trust me...

Mike Michaels
Owner, Mike's Mic Warehouse
Your Mic Source
www.micsmics.com
 
Blue Bear Sound said:
That's perfectly clear......... except for the fact that the 57/58's are dynamics and don't use a battery or phantom power.......!?!?!

:confused:
Click to expand...
They're integrated into the flux capacitor module, and only used in the post 9/11 versions with the 13 degree alignment parameters.
 
Oh... sorry BK.... just having some fun... Sorry.... didn''t know you were reading this thread... Sorry....
 
This thread is even better than watching Star Trek reruns!
 
turnitdown said:
Sure...
It all has to do with the alignment of the flux capacitors used.
The "early" Shure mics used an alignment of 11 degrees.
The "later" (post 9/11) mics used an alignment of 13 degrees.

This, in conjunction with the dialectric, caused the tonal characteristics I mentioned.

Hope this clarifies things a bit...

Mike Michaels
Owner, Mike's Mic Warehouse
Your Mic Source
www.micsmics.com
Click to expand...

Wrong!! The shure SM 57's transfer function of the flux capacitance is:
Pi*2x^2-6x+2Pi(x+y-z) where z= the ambient flux capacitance at 0 degrees

The shure 58's function is Pi*2x^2-6x+2Pi(x+y-F(x)) where F(x)= the *function* of the ambient flux capacitance. This function replaces z in the 57 because of the risetime associated with the ball at the end of the mic. The 57 has no such risetime! There cannot be 11 degrees! The 58 is 11 degrees out of alignment due to the very nature of the *inherent* flux capacitance. The 57 is ruler flat except for the varied frequency response due, in part, to the varying frequencies. If there are no varying frequencies, in a calibrated room with 0 phase mic cable, then the 57 should be ruler flat. This is, of coarse, if there are no varying frequencies. Varying frequencies could upset this ruler flat response, but it must be tested.


Hope this helps.
 
A quick and easy way of differentiating between the 57 and 58 is that the 57 is more bassy and more muffled. The 58 is cleaner and less muddy. If all you have is these two standard mics then for guitar i would use both of them. 57 for the bassier freq. and 58 for the higher freq. 57 would be used for the kik drum and maybe use both aswell as i DI for the bass. For singing i would use any of them, maybe the 58 though if my life depended on it!
 
ecktronic said:
A quick and easy way of differentiating between the 57 and 58 is that the 57 is more bassy and more muffled. The 58 is cleaner and less muddy.
Click to expand...
????

I disagree.................
 
One quick and easy way of distinguishing between SM57s and SM58s is that one is square on top and the other is round (I forget which is which).
 
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