OTA question

[Don Tillman]

   Date: Fri, 13 Oct 1995 10:14:04 +0200 (EET)
   From: Joachim Verghese <jocke at netcontrol.fi>

   Later ARP filters were based on the LM3900 quad norton amp and
   discrete gain stages. If I remember correctly, the LM3900 only
   has 4 or 5 transistors per amp, so I guess you could call it 
   semi-discrete.

I have no idea what's inside the Odyssey module, so now I'm incredibly
curious; what's the circuit like?  How on earth do they use an LM3900
in a VCF circuit?  How did you get a schematic?

  -- Don