tube VCA/wavefolder
2003-11-07 by osthelder
Greetings all!
Anyone built this or some kind of variant? How's it working? Any
sound clips?
Thanks!
Chub
Anyone built this or some kind of variant? How's it working? Any
sound clips?
Thanks!
Chub
Thread
tube VCA/wavefolder
Re: tube VCA/wavefolder
2003-11-08 by Michael
Hi Chub,
I built two of these just the way Ken describes on the webpage. My
main interest in them was as distortion devices and they work great
for that application...very warm sounding and easy to control. When
it comes to distortion tubes rock!
Cheers,
Michael
I built two of these just the way Ken describes on the webpage. My
main interest in them was as distortion devices and they work great
for that application...very warm sounding and easy to control. When
it comes to distortion tubes rock!
Cheers,
Michael
Show quoted textHide quoted text
> Anyone built this or some kind of variant? How's it working? Any
> sound clips?
>
> Thanks!
>
> Chub
Re: tube VCA/wavefolder
2003-11-10 by osthelder
--- In cgs_synth@yahoogroups.com, "Michael" <dmichaelt2001@y...>
wrote:
wrote:
Show quoted textHide quoted text
> Hi Chub,When
>
> I built two of these just the way Ken describes on the webpage. My
> main interest in them was as distortion devices and they work great
> for that application...very warm sounding and easy to control.
> it comes to distortion tubes rock!Thanks for the input, Michael! Now for the output-how are you making
>
> Cheers,
> Michael
up the attenuation? I was just planning for a simple op-amp/level
control/buffer scheme.
Chub
Re: tube VCA/wavefolder
2003-11-10 by Fernando
Good point. I'd like to know also about a good 2x amp solution for
level recovering... may be something like the CGS DC mixer with some
gain and 072 or OP275?
Fernando
level recovering... may be something like the CGS DC mixer with some
gain and 072 or OP275?
Fernando
Show quoted textHide quoted text
>making
> Thanks for the input, Michael! Now for the output-how are you
> up the attenuation? I was just planning for a simple op-amp/level
> control/buffer scheme.
>
> Chub
Re: tube VCA/wavefolder
2003-11-10 by osthelder
--- In cgs_synth@yahoogroups.com, "Fernando" <fdi@r...> wrote:
Show quoted textHide quoted text
>some
> Good point. I'd like to know also about a good 2x amp solution for
> level recovering... may be something like the CGS DC mixer with
> gain and 072 or OP275?I was simply going to make up a non-inverting amp with a gain of 2
>
> Fernando
(probably TL072) feeding a voltage follower. As long as the 6064
doesn't load down the signal too much, that is. If necessary, a
buffer at the input-or even an amp with low gain for increased
distortion- will require a level control at the output to keep things
in line. In lieu of a level control, an op-amp with a pair of 5.1
volt Zeners in the feedback loop will clip the signal to a "safe"
level if needed.
Chub
Re: tube VCA/wavefolder
2003-11-10 by Michael
Hi Chub,
pretty limited in the electronics field I figured I was best to leave
well enough alone. :-) (The lower output doesn't seem to be a
problem when using it just for distortion though.) If anyone comes
up with a simple and effective way of boosting the output please post
a diagram here.
Cheers,
Michael
> Thanks for the input, Michael! Now for the output-how are youmaking
> up the attenuation? I was just planning for a simple op-amp/levelThere is a considerable signal loss at the output but since I'm
> control/buffer scheme.
pretty limited in the electronics field I figured I was best to leave
well enough alone. :-) (The lower output doesn't seem to be a
problem when using it just for distortion though.) If anyone comes
up with a simple and effective way of boosting the output please post
a diagram here.
Cheers,
Michael
Re: tube VCA/wavefolder
2003-11-10 by sasami@hotkey.net.au
>Good point. I'd like to know also about a good 2x amp solution forThat would work. You may even want to use a pot that give you a greater
>level recovering... may be something like the CGS DC mixer with some
>gain and 072 or OP275?
range of gain so you can boost the output when the VCA is operating a lower
levels, or being fed weaker signals.
I did nothing to recover the level on mine, and it has never worried me.
Ken
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