[sdiy]Do you need to add more functions to your favorite LP4P VCF ?

[m.bareille at free.fr]

Selon Adam Schabtach <adam at studionebula.com>:

>
> > Agreed! What matters most is the sound, not a pretty picture.
> >  Still, given 1% resistors how different will one VCF sound
> > from the next?
>
> My (former) Xpander sounded different from one voice to the next, and
> according to its first owner (who eventually reacquired it from me) it
> sounded this way when it was fresh from the factory.

It seem logical here considering the wide amount of resitors to match , not only
inside each filter , but also between  voices...More they are more the
probablility of error increase...

I do not think Mr Oberheim was closely matching VCF resistors together between 
each voices of the Xpander...They just used 1% as a good compromise basis. I
think that 0.1% ( or 0.01% )  low ppm/°C resistors would have exploded the
device price who was ( and still be) not bad  ...

Cheers,

Marc B.




>
> --Adam
>
>