here it is the Alembic Schematic
![Image](http://i1124.photobucket.com/albums/l579/ilcaccillo/AlembicSchematic-1.jpg)
yes that's a SVF, and while all are similar topology, I see some differences (i think but I am still guessing about the other circuit), at least this one appears complete.Whoops wrote:It came to my attention that there's an Alembic preamp with a similar SVF topology
here it is the Alembic Schematic
LOLOLOLOLmediatechnology wrote:My wife and I put a puzzle together recently.
It was the "Leg Lamp" in "The Christmas Story."
Putting this back together reminds me of that puzzle.
Even though we had a picture to work from there were so many dark areas and hard transitions airbrushed out it was very difficult.
At least we now have a picture to work from though it's not the same scene as the puzzle we're working on.
I'm thinking that gain boost in the SV may be intentional.
--and--dual gang? OK the wipers will connect to Yellow and Green to shift the center frequency of the SVF. for proper operation the bottom of both pots are grounded through an end limit resistance (to be a variable divider) or left floating to be a variable resistance.
====================This is painful to make sense of. but best guess for frequency pot is violet wire goes to top of one section of frequency pot with the wiper of that section going to green wire. The top of the other pot section connects to the blue -black wire with it's wiper to the yellow wire. I will guess for now that the other two leads of the dual pot are left floating since I do not see two same value resistors to ground.