[sdiy] Simple bell-EQ

[ColinMuirDorward]

It's not fresh in my mind, but I remember feeling like the calrec PEQ would
be a good reference for PEQ needs. I think it was attractive to me because
the parts were easy to source. I believe it uses an antilog pot, which is
available from tayda. Although it sounds like you don't need the pot,
anyway!
Failing that, there are lots of PEQ-equipped consoles with schematics
available that you could refer to.
Keep us posted!
C


On Mon, Jul 6, 2020 at 3:12 PM Rutger Vlek <rutgervlek at gmail.com> wrote:

> Hi list,
>
> I’m hoping for some collective wisdom on the following issue. I’m trying
> to make myself a fancy (analog) guitar buffer with some basic tone
> controls. I already implemented a switchable high shelf filter (bright
> switch), and an adjustable 1-pole HPF for cutting bass. Now i would also
> like to implement a switchable mid-frequency scoop. With a VST parametric
> equalizer I found a bell-shaped curve with a certain Q and frequency I
> liked, and would like to implement this with a switch to select a few
> preset gains (boost/scoop). But I struggle to find a good analog circuit
> topology that fits my (simple) needs. Google turns up a lot of digital
> implementations, or way too complex equalizer circuits where every aspect
> can be controlled, but of which I don’t understand how to set gain, Q and
> frequency. Any suggestions for a simple bell-shaped EQ for which Q, gain
> and frequency can be set (and forget)?
>
> Many thanks!
>
> Rutger
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