revtor@... schrieb:
> Yeah Id be nterested in this also, I seem to notice the
> ranges of the 3
> filters in my 410 as being not parallel, knobwise.. (you
> get what I mean)
>
> anyone?
> Paul? Im sure you got these as close as posible from the
> get go, but whats
> the tolerance range of the vactrols?
The tolerance is ∗huge∗. And this is part of their character:
Two of them won't sweep exactly in parallel in a log
frequency scale even with the same CV and with their relative offset
adjusted for one center frequency.
If you like, you can adjust the knob on the pot shaft (or add an
internal offset trimmer), but this will only set identical
knob positions for one frequency (12 o'clock position would be
a reasonable choice).
Gentlemen, this is a ∗feature∗, and I mean it. Thank God for vactrols
which prevent the M-410 (and the Mutron Biphase, and the Schulte
Compact A Phasing, ...) from being as sterile as similar sweeping
filters without vactrols.
Using these things as a sort of fixed filter bank is a nice extra
goodie, but it was made and optimized for more demanding tasks.
(This is not meant against using them as fixed filters. I'm still
blown away from Elhardt's excellent Flute/Recorder patch !)
JH.