Latest project is an effect I fell in love with listening to the ARP Quadra, it looks complicated but I’m not phazed by it…
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Got to ask, where do you get all the proto board from…?
Aliexpress mainly but no deliveries to Ukraine anymore
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Nice! I’ve had the MXR phaser on my TODO list for ages, but yours looks like it’s got way more cells:
It’s an 8 stage, but I’ve added another 8 in banks of 4 upto 16
I recently built a Musikding The Phaser kit, but I modded it a little.
There is a feedback resistor, R15 in this schematic, that can be adjusted to change the character of the phaser. I put in an on-off-on switch, one side to the original R15, the other side to a resistor with half the value of R15 for more feedback and, when it’s off, no feedback for very mellow sound. I like it, and because I lack subtlety I almost always have it in the more feedback position.
Cheers
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Finished it late this afternoon, I only have my Mellotron clone to test it with which means I can’t sustain chords longer than 7 seconds but it’s sounding pretty good on strings.
All 16 stages are working in banks of 4, 8, 12 or 16
I would really like to try it on some old stringer, but everything is packed away currently because of the war here.
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Barton has a new 12 stage phaser module — JFET based, no LM13700 required… it’s on my “consider building this” list.
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This one is on my to-do list too.
Will it work with J113 mosfets too?
Never mind. I ordered a bunch of J112’s
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… and building it as we speak. Not hard to build. Almost done. More pics to be uploaded when finished.
The soldering side looks even worse 
And finished it just now! It works as expected. Nice
I need two more modules to build before sending my panel drawings to the laser cutterman. After that, the panels need to be powdercoated so this may take 6 weeks or so. Untill then we wait and enjoy the summer.
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R15 is a 10k potentiometer. How did you manage to put a switch in to change value? Or did you use a switch to switch another resistor parallel over the 10k potentiometer? Im referring to the MFOS stage 8 phaser schematic