[sdiy] Crumar Performer; anyone have a diagram for the ladder filter version?

[Bob Weigel]

I got serial A320 and it has a discrete filter like the Multiman.  
Probably the same design but wondered if anyone had a print of the Brass 
board for that early version.

Also this one is mod'd with a board with 10 4066 chips on one board with 
diodes that go to the same lines as the divider board. And there is 
another big board of digital chips stuck between someone's set list on 
old form feed paper in back :-)  Wire wrap and vector board. 

The only mod on the front is a switch that I see introduces a sub 
oscillator but I'll be curious if the seller can ask the original owner 
if there's anything else going on there.  They had modified this and a 
later one with front tuning knobs and I modded the Filter feedback on 
that one and it screams!  Classic VCF mod sweeps.   That machine is a 
later one that I think was called "Performer 2" and adds an octave 
transpose switch in the middle but it doesnt' have the crude but 
effective suboctave mod like the one with the ladder filter.  Wow now I 
have one of each variety here.  I'll have to decide which one(s) to 
sell.  The one I had is a middle production one but they go for so 
little and as we know the parts are worth a bit.  250 cash...or 160 
bucks of keys, and a couple hundred of chips maybe?  VCF, few 3080's, 3 
BBD, TOS, and a handfull of dividers.  Maybe I can get more out of the 
modded one.  :-) -Bob