[sdiy] FatMan Hacking ( and I dont mean hitting me with anAxe!)

Magnus Danielson cfmd at swipnet.se
Mon Oct 29 01:23:52 CET 2001


From: harry <harrybissell at prodigy.net>
Subject: Re: [sdiy] FatMan Hacking ( and I dont mean hitting me with anAxe!)
Date: Sun, 28 Oct 2001 18:41:41 -0500

> OK here's what I did....
> 
> I took a simulation of a moog ladder, and added a diff-amp
> at the 2nd cap (12 db).  I could take the resonance output from
> the end of the ladder (normal) or the 2nd tap.
> 
> With the feedback tapped from the normal position, the tap
> gave a 12db output, and looked a lot like the 24db.
> 
> With the tap as the feedback point, there was similar effect
> if the polarity stayed the same... and with reverse polarity it
> turned into a sort of VCA... once Q was raised past a certain
> point, the amplitude at both outputs fell sharply. Not too interesting
> IMHO.

Hmm... maybe I should pick up that papper and pencil and destroy
another otherwise wounderfull nigth?

> So... we have Ladder, SVF, Sallen-Key.
> 
> Anybody got another good topology ???

The Leap-frog ladder anyone? ;O)

I'm sure we can cook something out.

Actually time for me to start some ladder experiments which have long
been scheduled but never actually done.

Hmm... there is a EMS ladder in that Synthi AKS there.... should I?

Cheers,
Magnus




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