[sdiy] Roland cascaded SV 4-pole filters?

[Antti Huovilainen]

On Mon, 27 Mar 2006, Michael Bacich wrote:

> I wish the JP-6 filter schematic was a little easier to follow.  That weird 
> mode switching circuit and the hybrid sub-circuit modules make the whole 
> thing kind of confusing, at least the way it's drawn in the service manual. 
> It doesn't help that the filter chips are just shown as black boxes, with no

They're pretty much expo converter + quad OTA + buffers.

Antti

"No boom today. Boom tomorrow. There's always a boom tomorrow"
   -- Lt. Cmdr. Ivanova