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previous: Steve A. Trace::330pF cap ac... -- 9/27/1999 6:39 AM

Re: Marshall Mods / Trace Allen / etc

9/27/1999 5:45 PM
ChrisM	Re: Marshall Mods / Trace Allen / etc This must be a phase distortion. The two caps have different enough phase characteristics that they create a frequency cancellation at the high end and give you that fatter tone. Pretty interesting. Not the first thing I would have thought of trying, but the phase distortion could have all sorts of flavorful results that could sound far more interesting than simple high/low-pass filtering. My first guess is that the much smaller 330pF cap lets the signal through very quickly, while the larger cap has a higher delay. This wouldn't really effect the slower-changing lower-frequency signals, but could really cancel out some of the higher frequencies, but could also serve to enhance some of them, making the signal a lot more complex. -Chris "This-education-is-finally-coming-in-handy" McLean

9/27/1999 5:45 PM

ChrisM

Re: Marshall Mods / Trace Allen / etc

This must be a phase distortion. The two caps have different enough phase characteristics that they create a frequency cancellation at the high end and give you that fatter tone. Pretty interesting. Not the first thing I would have thought of trying, but the phase distortion could have all sorts of flavorful results that could sound far more interesting than simple high/low-pass filtering. My first guess is that the much smaller 330pF cap lets the signal through very quickly, while the larger cap has a higher delay. This wouldn't really effect the slower-changing lower-frequency signals, but could really cancel out some of the higher frequencies, but could also serve to enhance some of them, making the signal a lot more complex.

-Chris "This-education-is-finally-coming-in-handy" McLean

Replies:

Trace q{This must be a phase distortion. ... -- 9/27/1999 5:56 PM
Mark Knapp I think ChrisM is on the Mark on th... -- 9/28/1999 3:05 AM
A.S Couldn´t have said it better myself... -- 9/28/1999 8:48 AM