u/GifGaffeGiraffe

I'm having some odd behavior from my SC-880 when controlling it from Cubase 14. For whatever reason, I seem to be occasionally hitting something that's causing all MIDI notes to trigger twice, or at least that's what it sounds like.

Audio Example: https://soundcloud.com/zachary-pinkham/double-hit-issue-with-sc-880/s-ors0W86OqgT?si=8b686c55117245df842e684aaef1dada&utm_source=clipboard&utm_medium=text&utm_campaign=social_sharing

I checked the track with a MIDI Monitor plugin and it's telling me each note on and off event is occurring once. I would assume whatever it is must be coming from some MIDI CC I knocked somehow, because as soon as I open up a new project file and send any MIDI to the SC-880, the issue is gone. If I go back to the project where the issue took place, the problem returns. It affects every single channel (checked all of them). Any idea what it could be?

I got a Jaspers 170-4-120B used (I live in the US, those tariffs and shipping are nasty) and went through a painful time putting it together (it was over-disassembled), but received some really helpful tips from the people at Jaspers. Now it’s together and synths are on it, but I am mystified as to how anything attaches to this rack. I asked the Jaspers folks a while ago and have received no reply, do any of you recognize this kind of rack that appears to have zero holes? I don’t believe any parts are missing.

EDIT: here’s a picture of the opposite side, not entirely sure how the sliding nuts fit into the equation: https://imgur.com/a/ljcjBCl