[sdiy] HP from LP ? -> Mother-32

Andrew Simper andy at cytomic.com
Fri Aug 4 07:13:22 CEST 2017

On 4 August 2017 at 12:45, Michael E Caloroso <mec.forumreader at gmail.com>

> On the Voyager, resonance only worked on the LP VCF in BP mode.  The
> HP VCF is the simple inversion/sum trick but with resonance disabled.
> MC

Thanks for clarifying this. So it seems the only actual resonant HP Moog
Ladder filter is in the Ladder 500 series device. It's a shame that they
didn't at least do the standard summing trick to generate high pass of
different slopes from the low pass taps, because in the Voyager you can
actually select how many poles of low pass you want, so they do have some
switching to access each stage.


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