[EFM] You got a brand new pair of roller skates...

[tomg]

Here is the 4p s&k vs a 2040. I start with the s&k and then
the 2040 first one the the other back and forth as I go. Sweep 
down, sweep up-on the edge res then barely oscillating sweep
up/dn then a little more oscillation sweep up/dn. Ending with 
the 2040. The 2040 is not as loud as the s&k until the res
oscillation part then it gets much louder. Over all I like mine
better (is that heresy?). When the s&k's res is close to or 
oscillating it's even (more or less) across the entire sweep. 
There are no dropouts or sudden volume surprises. It's the first 
filter that I've ever seen/used that's that even and predictable. I 
like it. Soon to be a new CAM module.  

mp3's tend to cut out higher freqs but it's pretty obvious
whats up.

http://www.xavax.com/efm/waves/2040.mp3

Tom


> I forgot to guess +/-15V? If so lower those 10K to
> 1K or 2K2 if you're not scared!
> 
> I just did some A-B test on the new 4P S&K and a 2040.
> It's very close. I'll up a wave later.
> 
> Tom
> 
> 
> > You could just lower those 10K resistors. But once you've
> > heard it go there you will want to go back again..I did 
> > anyway.
> > 
> > Tom
> > 
> > 
> > > ACTUALLY I just stumbled into a really nice VCF8e mod... and so easy
> > > (I'm pissed i've been working for days... Just solder one red LED across
> > > the 33K resistor
> > > in the GAIN stage OTA (resonance). I prefer Cathode to ground polarity.
> > > Gives
> > > Asymmetrical limiting if you crank hard, and inproves the input dynamic
> > > range. I can go up to 2-3 volts without totally killing the res....
> > > 
> > > Works better than the three diodes and the diode breakpoint circuit, and
> > > fits on the
> > > board !!!
> > > 
> > > H^)
> > > 
> > > tomg wrote:
> > > 
> > > > > I got a Sallen-Key...
> > > >
> > > > You're going to get another too!  Stop trying to fix those things or
> > > > you'll go batty!! They are naturally nasty and they like it that way.
> > > > Try to keep the res pot settings low or you might start playing
> > > > acid Harry!.....;-)
> > > >
> > > > The new...uh...ah....damm....VCF12..4P s&k...2040 sounding
> > > > all 13600 thing is comming it's exactly what you want. Might be
> > > > what a lot of people want...;-)  It's very very smooth .....I'm a
> > > > horriable tease sometimes...
> > > >
> > > > Tom
> > > >
> > > 
> > 
>