[sdiy] 4 bands, no succes

[Dave Krooshof]

Hi,

I made a 4 band filter, or at least I tried.
I based it on >>>Marjan<<<'s Dual Filter.  <- credits!

Both are posted here: http://www.xs4all.nl/~krooshof/4band
as I didn't find Marjan's original link. mine's in schematic-layout hybrid

The problem is: It only hums wildly, it doesn't filter, so it seems.
no volume changes either. My question to you: Is my re-design bogus?
(or did I made soldering mistakes?)

thanks,

Dave