Apologies for not providing any further updates/ or pending mod descriptions for this project any longer. I describe many mods here (more than the classic mods for the original), including mistakes and spelling glitches, and feel I rather want to spend time on other synth modding/development projects.
Haven’t spent much time with this thing but you can find pictures below and here’s a first PDF modding guide (most mods would also work for 909/Steda/RE-909 etc.). Thanks for reading, thanks to the gearheads at modwiggler, gearspace, and sequencer.de!
Update Dec 2023: It’s been brought to my attention by David Mochen that the main out on their unit has considerably less low end than single outs. So, after probing around a bit, they found that increasing the cap value of one electrolytic capacitor near the main out improves things. Test A/B by simply adding a 10uf cap to teh existing one in parallel (mind the orientation of white stripe!). Here’s two pics (sorry, I don’t have any sound examples)…
Sample Pack:
In case you’re not after modding, here’s a free sample pack of some instrumnets of my modded RD9. And here is a second installment with tom and metal instrument samples.
Sound demos:
You’ll find a playlist of somewhat hastily recorded mods (some crackles here and there) here: https://soundcloud.com/uibkmedan/sets/rd9_modifications.
And some pictures for your own analysis/delectation (never mind the odd additional cable or cap wired in by me):
