Search found 5 matches

by Oran
Sat Apr 02, 2011 11:27 pm
Forum: Music Tech DIY
Topic: Korg Monotron Euro Module DIY
Replies: 140
Views: 93581

Re: External gate-in mod

Thank you Scott, that all made perfect sense! I appreciate you putting up with my partial understanding of some things. The reason I asked about the pot is that I'm stuffing the mod into the Monotron, so of course anything that I can leave out is helpful. It seems clear to me that the additional pot...
by Oran
Wed Mar 23, 2011 1:38 pm
Forum: Music Tech DIY
Topic: Korg Monotron Euro Module DIY
Replies: 140
Views: 93581

Re: External gate-in mod

https://www.muffwiggler.com/forum/userpix/4061_monotron_extgate_1.jpg Hi Scott! So, I'm modding a few more Monotrons and I think I'm interested in utilizing your new gate/pitch fix method you've outlined. My previous method of using a switch on r11 worked very well, but I'd like to avoid the additi...
by Oran
Fri Feb 18, 2011 7:53 pm
Forum: Music Tech DIY
Topic: Korg Monotron Euro Module DIY
Replies: 140
Views: 93581

Thank you teatanic, Scott & th0mas, for your help! I really appreciate it! I've got it all worked out now, and finished two Monotrons this morning! It turns out one of my original connections was not solid enough in my resistor replacement circuit, so once I got that worked out the switch worked gre...
by Oran
Thu Feb 17, 2011 10:24 pm
Forum: Music Tech DIY
Topic: Korg Monotron Euro Module DIY
Replies: 140
Views: 93581

Hi Oran. My best guess is that R11 is removed and there is not yet any other connection to IC2 pin 10 (the gate input/test-point). This LM324 has a PNP input stage and base current could cause this floating node to rise, which turns on the Monotron gate signal. Then playing the ribbon would sort-of...
by Oran
Thu Feb 17, 2011 8:51 pm
Forum: Music Tech DIY
Topic: Korg Monotron Euro Module DIY
Replies: 140
Views: 93581

Hi all! Long time lurker, first time poster. I wish I had something to contribute for my first post, but I come to you with a problem instead. (Disclaimer: Though I'm pretty good at soldering and such, I'm only learning how to read schematics.) I'm currently adding CV inputs to a Monotron for a frie...

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