Cookbook Fuzz (review)

Started by jmusser, December 29, 2004, 01:02:23 AM

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Mark Hammer

As for gating, here you are outside the perimeter of my knowledge.

However, if a separate bias voltage is fed to stage 2, AND you have a means of varying Vref so that it is closer to one end of the power supply that the other, you can limit the dynamic range of one half of the waveform (can't sweep any farther than +9 or 0) and proiduce asymmetrical clipping.  This is part of what happens in the Rangemaster.

Of course, the fact that you have diodes with a 500-600mv clipping threshold in stage 2 means that you'd have to come closer than that distance ot the rails (e.g., +8.5 Vref) to really have any audible impact.  I suppose if the diodes were NOT there, then placing some other ceiling on voltage swing in one direction might be audible.

Dragonfly

Quote from: Mark HammerAs for gating, here you are outside the perimeter of my knowledge.

However, if a separate bias voltage is fed to stage 2, AND you have a means of varying Vref so that it is closer to one end of the power supply that the other, you can limit the dynamic range of one half of the waveform (can't sweep any farther than +9 or 0) and proiduce asymmetrical clipping.  This is part of what happens in the Rangemaster.

Of course, the fact that you have diodes with a 500-600mv clipping threshold in stage 2 means that you'd have to come closer than that distance ot the rails (e.g., +8.5 Vref) to really have any audible impact.  I suppose if the diodes were NOT there, then placing some other ceiling on voltage swing in one direction might be audible.


INTERESTING...i hadnt thought about producing asymmetrical clipping by varying voltage .  hmmm....

im gonna do a bit more research on the effects of voltage on opamps....

once again, i want to thank you for your input and knowledge....