MOTM

I'm interested in a 440 kit, but how do I know which pots I need?  It
doesn't seem like they come in the extra parts kit, although they do for
some other modules like the 800.

Thanks.

Dave

someone correct me if i'm wrong here, but i think that if you buy a 
PCB, you get the schems and the parts list. from there you can take 
your pick which pots you use for which values - not everyone uses 
Bourns/Spectrol etc.

>I'm interested in a 440 kit, but how do I know which pots I need?  It
>doesn't seem like they come in the extra parts kit, although they do for
>some other modules like the 800.
>
>Thanks.
>
>Dave

On 2007-08-08 14:56 -0700, Jason Proctor wrote:

> > I'm interested in a 440 kit, but how do I know which pots I
> > need?  It doesn't seem like they come in the extra parts kit,
> > although they do for some other modules like the 800.
>
> someone correct me if i'm wrong here, but i think that if you buy a 
> PCB, you get the schems and the parts list.

That's right. And you can download the parts lists before you buy
here :

  http://synthtech.com/tech.html

For the 440, you need three 100 k log pots and four 100 k linear
pots. Paul specified cermet for one of the linear pots
(resonance). (I believe cermet is preferred when a low temperature
coefficient is needed. Why is it more critical for resonance than
for any of the other six pots ?)

-- 
Andr\ufffd Majorel <URL:http://www.teaser.fr/~amajorel/>
Do not use this account for regular correspondence.
See the URL above for contact information.

For the 440, you need three 100 k log pots and four 100 k linear
pots. Paul specified cermet for one of the linear pots
(resonance). (I believe cermet is preferred when a low temperature
coefficient is needed. Why is it more critical for resonance than
for any of the other six pots ?

It's not. It's just that the Spectrol 149 (cermet) is easier to buy than the 148 (plastic).

Paul S.