I have been pilfering a few schematics from the build guide section on AI’s website lately. The other day a new product popped up; a voltage controlled matrix mixer. I am a big fan of matrix mixers in general and can very easily imagine a bunch use cases for this design.
Just wanted to tip you other synth enthusiasts (and perhaps get some opinions from some of you who are way better than me at assessing circuit designs)
So, it turns out I’m a moron. It could possibly be helpful if I remembered to post the damn link.
Voltage controlled matrix mixers are a SCAM by BIG JACKS to sell MORE JACKS. 
I’m in the pocket of BIG POTS already. I already made an 8x8 active matrix mixer, and I’m designing a better one that’s 10x8. Best tool there is for being unkind to effects pedals.
if anyones interested I have stock of the new DAB2190 for the SMD-phobic if you like this design but don’t want to deal with the soldering yourself DAB2190 ssi2190 Through Hole Adapter Submodule
Oh that’s nice. Personally I’m thinking of making this my first foray into SMD soldering.
yes, nothing to be afraid of, I’ve been selling SMD pcb’s for 10 years now, you might want to “drag solder” this pitch of IC
I’m actually thinking of going straight to a hot air station.
you’ll need one for rework anyway, a cheap hotplate is good if you use a stencil for your paste
These chips are VERY small. You will need a microscope. The PCBs I sell are all SMD pre-soldered as it would be impossible for me to spot soldering errors via images via email.
I’m currently reworking the schematic to thru hole, except for the SSI2190 chips. It’s more an exercise in PCB design at this point since I wont have the money to build my new system for a while.
It’s a big one. The first project I couldn’t fit on one sheet.
It’s massive in Kosmo format. Front panel is 200x200mm.
you don’t try and solder each pin individually, drag solder under a desktop magnifier then inspect joints with a 10x loupe https://www.youtube.com/watch?v=tc0-DLjMUNo
I think Abe is saying he doesn’t want to be responsible for his customers not knowing how to do that.
that’s fair enough, I perhaps should have used a quote so my answer was clearer, a microscope isn’t necessary for soldering these as claimed, and can in fact mean an increased risk of burns when soldering, a desktop magnifier is fine if they’re drag soldered.
Do you have more info about this? I’m starting to want a an active matrix mixer in my kosmo case
You can always buy a PCB from me and wire 1/4” jacks to it.
I actually just built your stereo matrix mixer for my euro case. I may just do exactly that for my Kosmo.
Thanks for letting me be a part of your journey!