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DIY Stompboxes => Building your own stompbox => Topic started by: ashbass on March 11, 2004, 01:10:28 PM

Title: Big Muff cap mods change what?
Post by: ashbass on March 11, 2004, 01:10:28 PM
The schematics for the Big Muff say that changing some caps to higher/lower values are reported to make the effect "sound better."
Sound better, how? What do these cap changes do to the sound of the effect?

-changing coupling caps from 1.0 to .01 uf
-changing diode feedback loop caps from .01 to 1.0 uf
Title: Big Muff cap mods change what?
Post by: smoguzbenjamin on March 11, 2004, 01:18:18 PM
Think of it this way; bigger caps pass more bass. Smaller caps pass less bass. So a smaller coupling cap will pass a higher signal while a cap in the feedback lopp will mellow out clipping a bit I think...
Title: Big Muff cap mods change what?
Post by: Ed G. on March 11, 2004, 01:30:14 PM
Quote from: smoguzbenjaminThink of it this way; bigger caps pass more bass. Smaller caps pass less bass. So a smaller coupling cap will pass a higher signal while a cap in the feedback lopp will mellow out clipping a bit I think...

Not exactly...a big cap and a smaller cap both should pass high signals similarly, but a large cap passes more bass, as you stated above. Using a smaller cap (but not too small) can result in a more focused sound, whereas a bigger cap can make the sound a bit too wooly or muddy.
Title: Big Muff cap mods change what?
Post by: smoguzbenjamin on March 11, 2004, 01:36:16 PM
Yeah I sortof mis-worded that... I need sleep :roll:
Title: Big Muff cap mods change what?
Post by: ashbass on March 11, 2004, 01:39:05 PM
Quote from: Ed GUsing a smaller cap...can result in a more focused sound, whereas a bigger cap can make the sound a bit too wooly or muddy.

So making the coupling caps smaller should thin the sound out?
What does the extra bass do to the feedback loop?