Non LPF ladder filters?

Don Tillman don at
Tue Dec 19 08:27:49 CET 1995

   Date: Mon, 18 Dec 1995 18:51:46 -0800 (PST)
   From: "A.S.P." <ms20 at>

   Anybody know of any high pass or multimode filters that are based around 
   transistor or diode ladders?  I've seen the moog high pass vcf, but I'm 
   wondering if there's any other such animal out there.

There's the voltage-controlled phase shifter on the ARP Quadra.  It's
an incredibly clever variation of the Moog ladder.

  -- Don

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