EN72 Timbre Modulator (was: Re: [sdiy] Minisonic)

[Tim Parkhurst]

On 7/21/07, Fernando de Izuzquiza <listas at fdi.jazztel.es> wrote:
>
>
>
> Tim, the 307 and 556 are from a different circuit, not the Minisonic.
> But thanks for the warning.
> Now I know that, in the 70s, the 556 was a slightly better 307 op amp.
> And that as Ken says, are replaceable by TL07x (in case the 307 isn't
> crucial for the waveshaping for any reason/spec)
>
> In fact the circuit I was looking at is from an Electronotes (free)
> article:
>
> "Timbre Modulator" Option 1
> http://electronotes.netfirms.com/free.html
> (scroll down to "[Electronotes 72 Timbre Modulator]")

Ah, that's very different ;-)

One note, in Barry Klein's Electronic Music Circuits, the same circuit
is shown (and properly credited to EN), and has 307s for all the amps.
You could probably do the whole thing with a 13700 and a TL074.


Tim (typing a bit slowly, due to the cat in my lap) Servo
-- 
"Imagination is more important than knowledge." - Albert Einstein