I did the "sem-mod" on that m-121 you mentioned, but It was not really a "mod" to the original
cirquitry, the whole vcf pcb was replaced with a clone of a dual sem type svf
when it comes to separate outputs for the different waveforms on the vco´s, electronically
it would be very simple, unfortunately there is not much panelspace to have room for the
extra outputs, at least if you want it to look good, maybe an alternative would be to lead the
waveforms out of the module and use a piece of the 191j´s upper row of multiple jacks in some way.....
cheers,
OLLIE
To: RolandSystem100m@yahoogroups.com
From: peterwendt@...
Date: Wed, 3 Oct 2007 23:30:31 +0000
Subject: [RolandSystem100m] filter mods; multiple outputs on VCOs
Hello,
I just joined the forum, and immediately found the 121 HP VCF mod. Nice.
There are two mods I would really like for my 100m:
1) switchable modes for the filters (not just LP or HP). Someone on
Matrixsynth mentioned that this was possible, in reply to the posting
about the SEM-filter-in-121-box mod.
2) simultaneous waveform outputs on the 112 VCOs. Having only one
waveform at a time per VCO is annoying.
Has anyone done these mods?
Thanks,
Peter
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