OK this is what I want to do: On the Casio SK-1 in normal "Play" mode all 4 voices in the SK-1 are routed through the melody filter. Because the SK-1 samples at (only) 9.38 Khz This filter is set at something like 4Khz.
-->> Thus, resulting in a muffled sound.
I want to either bypass the filter completely, or modify it so it lets through more high frequencies, & deicious digital grunge. On the Linn drum for example te designers "cheated" with the filters and set the cutoff frequencies higher than is "proper" to let more high harmonics through.
I was thinking of connecting a wire to bypass the filter section to see if that would have the desired effect already.
(Red line I drew) Does anybody know if I can safely do that without breaking anything?
Does anybody know anything about analogue filters? I was also thinking of changing the value of some of the caps to raise the cutoff frequency but which ones & what?