Found online, the Eurorack company Noise Reap has released schematics for all of their discontinued modules, totally for personal and commercial use:
Could be some gems in there!
âXimâ looks really useful, Iâve been looking for a little crossfader like that. 2.5cm module, anybody? (Although the output it 20v PtP, which seems a bit hot, right?)
Is it? I canât tell by looking. Are you saying itâs greater than unity gain? You could always divide it down, though.
Thatâs what it says in the manual: https://static1.squarespace.com/static/5f642087930bbc3568cdeddf/t/5fea5bd1c4e1037882b4585a/1609194449314/xim.pdf, I guess theyâre unity mixing two audio sources, so it make sense itâd be twenty.
Voltage divider might do, or maybe just an variable attenuator at the end.
Well, theyâre cross fading two sources, so it shouldnât be greater than each. It says âheadroomâ. Iâd assume itâs unity gain and can handle > 10 Vpp if thatâs what you give it. (Assumed until breadboarded, I mean.)
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Wow !! great page ! a lot of schematics look so interessants ! thank you !
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Just tacking this on here, but I found a total schematic/kicad/layout for the Juno chorus using reissued chips: GitHub - gligli/juno-chorus-clone: Roland Juno-60 chorus board clone
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Got a PCB order coming up, figured Iâd do a few and save on shipping costsâŚ
EDIT:
And one more, Iâve gone crazy with the tiny modules. I donât know whatâs happening. Kross, a crossfading VCA. Envy, an envelope follower.
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âSPVYâ? Hmm. 
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