Reply-To: "Fred Bartoli"
From: "Fred Bartoli"
Subject: Re: Generating crossover distortion?
Date: Sun, 20 Oct 2002 19:38:59 +0200
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NNTP-Posting-Date: 24 Oct 2002 01:03:18 MEST
"Gibbo" a écrit dans le message news:
> "Lukas Louw" firstname.lastname@example.org
> Date: 10/20/02 2:41 PM GMT wrote:
> >The only reason I can imagine why anybody would want to introduce
> >distortion at line level, is for a guitar effects box, yes?
> >Simplest is to make a little complementary follower without bias, using
> >2N3904/2N3906. 2N3906 collector to negative supply, 2N3904 collector to
> >positive supply, bases connected together as input. Connect the emitters
> >100 ohm resistors to a common point, the output. Load the output with a
> >100 ohms, and you'll have gobs of crossover distortion..... You'll need a
> >hefty input, 2 volt or more, or you could add a simple bias circuit, and
> >vary the amount of crossover distortion quite easily, and run at lower
> >signal level.
> >Hope that makes sense,
> >Lukas Louw
> >> I'm looking for a way to add crossover distortion to a line level
> >> audio signal. I tried some internet searches, but all the sites I
> >> could find had to do with reducing it :) I do know that to do this
> >> with solid state I need to design a "Complementary Symmetry Circuit",
> >> but I have no clue what this means beyond the fact that it involves
> >> two amplifiers that amplify alternating parts of the waveform.
> >> If anyone can point me in the direction of some information or explain
> >> how you'd do it, I would be much obliged.
> I can't imagine why anyone would ever want to add crossover distortion to
> anything. It's sounds bloody awful.
I did that once when I was designing high end audio amps... just for
I wanted to hear by myself what sound it gives.
> I suspect OP has got confused with crossover as in frequency crossover ?