parallel CMOS distortion

Started by Steben, January 26, 2006, 09:16:17 AM

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Steben

Anyone any idea how putting CMOS inverters (4049,4069,etc...) in parallel function and sound?
I mean with one input resistor and then one feedback resistor connected to all inputs and outputs of the CMOS stages, giving a single "super" stage.
In the Nobels DT-SN Special Distortion there is a 4007 wired that way with an opamp driving it.
I asked a while ago, but I give another try.
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Processaurus

I think that would just lower the output impedance, rather than changing the sound, which could be useful for other things than signal processing.  You could drive a speaker or headphones.  I think I've actually seen a schematic for a headphone amp that uses all 6 inverters in parallel posted here before.  I've also seen a line driver buffer (Jack Orman's design maybe?) with a really low output impedance that uses 4 opamps in a quad package set up all in parallel.

What would be interesting to me would be a couple (2 or 3) TSF's or Red Llamas in parallel with different gain and volume settings, and then mixing those outputs together.  Having multiple clipping thresholds might soften the threshold were distortion starts, plus the clipping from the 4049UBE is soft to begin with.  Just an idea.  Maybe it could sound like the softest distortion known to man.  Baby soft distortion...

Steben

Aha, low output impedance,... in front of a tone control of course! makes sense.
About the treshold stacking: yes, fine idea, but maybe that could be done with putting TS style opamps in parallel too I guess.
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WGTP

Dual distortions with different clipping thresholds, Very Interesting. :icon_cool:
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