MOTM

Mine starts at about 4 at certain frequencies.  I'm thinking about 
doing the mod because this is too low...

--- In motm@yahoogroups.com, "J. Larry Hendry" <jlarryh@i...> wrote:
> Well, I know I am behind most of you on this one.  But, I finally 
fired up
> my 490 filter tonight.  Paul made my brain hurt with the math in 
the theory
> of operation docs.  But, it got much better once I heard that 
lovely sound.
> 
> The self oscillation tracking on mine was very good well above 
where Paul
> said it would be good.  This is one nasty (in a good way) sounding 
filter.
> It is certainly "different" than anything else in the MOTM stable 
(including
> the 440 Low pass which I so dearly love).
> 
> If you don't have one, sell your kids and get one. :)
> 
> If you have one, I am curious as to the point on the res control 
where your
> stock 490s begin to self oscillate.  Paul was kind enough to clue 
us in on
> which resistor we could replace to change that self-oscillation 
start point.
> I am wondering where others are and if they elected to do this, and 
why?
> 
> Kudos to Paul for another GREAT module.