From Kylee Kennedy Sent Thu, Apr 12th 2018, 18:16
From Kylee Kennedy Sent Thu, Apr 12th 2018, 18:16
Having owned all the MS series synths. I see the MS-20M as a true sucessor. The mini versions were more like toys. I love that they added pad for modding and jack holes with caps to bring it out to the front panel. Did they ever release info on available mods or is that left up to more inquisitive modders? Kylee On Thu, Apr 12, 2018 at 9:29 AM, Andre Majorel <xxx-xxxxx@xxxxxx.xx> wrote: > On 2018-04-12 09:09 -0400, Chase Smith wrote: > >> Although the ms-20m is smd, it is actually pretty easy to work on bc >> there is a lot of room in there. Some pads are left open for adding >> stuff like vco1 mod input. I was able to add independent cv for both >> oscillators, disconnect the eg from the vca and some of the usual >> mods. I like it a lot for the sound and the form factor, but I've >> never used an old ms-20 so I can't say how close it is. Someone took >> a lot of high res photos of the pcbs and I saved them to my dropbox, >> if anyone wants to take a look. >> >> https://www.dropbox.com/sh/7qt7tcachqs7w8f/AACbLQ2RQgyRSuB8pLut4JCOa?dl= =3D0 > > Very interesting, thanks. > > In Korg_MS-20M_PCB_060.JPG, you can see the VCFs. I suspect that > the two rows of four transistors are for the KORG35 but that's > odd. The schematics of the KORG35 I've seen showed five > transistors. > > The six NJU7301 (quad analogue SPST switch) are probably there > to share the I/O and controls between the two versions of the > filters. > > -- > Andr=C3=A9 Majorel http://www.teaser.fr/~amajorel/