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

[Andrew Simper]

On 4 August 2017 at 13:13, Andrew Simper <andy at cytomic.com> wrote:

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

PS: I don't know for sure that the Moog Ladder 500 series actually does do
a resonant high pass, so it would be great for someone to confirm this, and
also if the 12 / 24 dB selector works in HP mode.
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