
r/Omnichord

OM-108 Custom Firmware - Sub Sound Replacement
I managed to dump the firmware off of the OM-108 and had Claude make some changes to it. Most of it was MIDI stuff to help connect it to my OP-XY but I figure people here would be interested that I was able to also change the sub sound. I documented most of the process on the Omnichord Discord server, feel free to message me there if you have any questions.
Help Needed! Custom OM-108 Rhythm Patterns
Hey everyone I’m working on custom OM-108 firmware as I’ve been posting about and am looking for some help. I’d like to add the OM-27s “foxtrot” rythm pattern to the 108 but I can’t find any good recordings of it online. If anyone has a 27 and wants to help me out, I just need 2 full recording of the pattern, one of just the auto chord/bass rythm and one of just the drums. Both at the same tempo, ideally somewhere a little under the mid point of the tempo knob. Thanks :)
Omnichord OM-108 Custom Firmware Sounds Demo
here's a video of all of the new voices I added to my OM-108 custom firmware since I posted last. The way my system works is each "main" voice now has a "primary" and "alt" sub voice that you can toggle by pressing the voice button again. The chosen voice is saved in memory so you can pick your sub voice per main voice. I wanted to avoid anything complicated that strayed too far into sound design since the device lacks buttons and UI to display what's selected. I tried to make sure all new sub voices complimented the main voices well. The only stock main voice I replaced is the harp as I thought it was pretty bad/uninteresting. I replaced it with a synth harp/clav sound I like more. I will have more information on custom firmware soon in the form of a GitHub documentation post.