Hello,
I'm insterested in a pair of tubes. I can pay with paypal if possible - if
not would you take a check?
-gerald
I'm insterested in a pair of tubes. I can pay with paypal if possible - if
not would you take a check?
-gerald
On 2/24/07, Richard Brewster <pugix@...> wrote:
>
> I just finished the second VCA of my dual Tube VCA. Both modules worked
> the first time with no problems. I used most of the default parts
> values. Mine have two attenuated audio inputs (with the output
> normalled to the second input for feedback), an attenuated CV input and
> an initial gain pot. I used a 270K resistor on the manual gain pot,
> which goes between zero and 15V, so that the range is about the same as
> a 5V CV input. With the gain all the way up, the circuit doesn't have
> much more to go anyway.
>
> The most interesting find was that the distortion is very much related
> to the level of the input audio. With low input levels (+/- 2V or so),
> there is not much distortion. At this level a triangle wave input comes
> out looking like a triangle. The standard gain resistors give you about
> 70% of the input level at the output. Now, as the input level
> increases, the output becomes more squared up, eventually becoming
> almost a pulse wave. This wave is chopped off at about +2V, but spikes
> downward well below -5V. It's a pleasing sort of distortion. If you
> mix the output back for positive feedback, the distortion is accentuated
> at lower input levels. At high feedback levels there is a sub-octave
> effect that changes with the CV level. All in all, a neat module.
> Thanks, Ken!
>
> I have some extra 1J24B tubes. I am offering three pairs of these for
> sale to buyers in the United States. $15 for a pair of tubes, shipping
> included. Contact me off the list if interested.
>
> Richard Brewster
> http://www.pugix.com
>
>
>
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