4072 VCF, 1V/oct trimming problem

[isak]

Hi Guys.

it seems i cant trim it as it should.
i followed Yves instructions but without success.
i hope i did it right.
for 0V i used midi keyboards and via midi2 cv output 0V, same for 1V.
i did trim it and got to the correct V measurements, after trimming i turn reso all the way up, turn Freq all the way down, play midi keyboards and the notes i get is some where in the 18kHz and 20kHz, after that i checked the VCF response and it was a mess, no cutoff, only when i trim T1 down by much the cutoff is back to normal.

any idea what i did wrong?

cheers,
Isak E.