MATRIXSYNTH: MOOG Ladder Filter in HP Mode


Tuesday, June 26, 2007

MOOG Ladder Filter in HP Mode

via Fernando on electro-music.com. BTW, does anyone know if threads on electro-music.com expire like VSE? I'm always worried stuff like this will disappear over time. That's one of the reasons why I chose to host this site on Blogger vs. my ISP. This blog should remain long after I'm gone.

"Hi all,

Reviewing Moog ladder schematics in my archive I found this variation:

moritaVCF76.gif

it includes a switch to HP mode by just injecting the input signal to the output buffer (through a trimmer and a resistor)

I like this version:
rjb_diy_synthe_202a_vcf_moog_schem_revB.pdf
pcb_202a_vcf_revA.pdf
diy_synthe9.htm

and wonder if it would be possible to implement the Morita trick to get HP response..."

Be sure to check out the follow up replies on electro-music.com.

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