Tapped 4pole et al.

[Harry Bissell]

Make this a quick one: My last comments on simulation of the 4 pole filter
were for the Moog-style ladder with an added diff-amp at the 2nd stage. I've
never simulated the 3320 or 3080 style filters because (of course) the models
don't exist for EWB. I saw JH's model for the 3080 but I don't understand all
the parameters. Probably (with help) the model could be adapted for EWB
(electronic workbench).
I'd like to hear more about the diff-amp reading across taps to yield bandpass
or other responses. Sounds interesting.
Here's the Pro-One filter mod.  Later   :-) Harry

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