Here is another great layout by Sebastian!
In his own words...
Just wanted to share a layout I did of the RE-20 circuit from the 1776 Multiplex Echo Machine. It seemed like there aren't a lot of options for delay effects with parallel, independent delay controls. For the sake of simplicity (and a layout that would fit in anything smaller than a shoebox), I haven't included either the speed-ramp circuit from the original Multiplex, or the modulation circuit from the Multiplex Jr.
I've always wanted to try this one. I've also wanted to try the Sagan, I guess an attempt to emulate a Roland Space Echo. But the circuit is enormous. This version breaks the boards in two. May make it more doable.
ReplyDeletehttps://carchariaseffects.com/wp-content/uploads/2020/05/Sagan-Delay-V2.1-Build-Document-November-2019.pdf
Check this one out Tom, four PT2399s on a huge piece of board. Sounds pretty awesome
Deletehttp://guitar-fx-layouts.238.s1.nabble.com/deadastonaut-abductorIIdelay-td29363.html
Man, the Sagan looks fascinating, but I just don't have the autrement for it. On the other hand, Dirtbox veteran MTK successfully built it, in a totally boss enclosure, too:
Deletehttps://youtu.be/gCTUXckIjMY
That DA delay is insane. And that MTK build, I've seen before. It may be the coolest build I've seen.
DeleteI built this and it works, but it's a fixed A+B configuration. So I made a few modifications and added the 4P3T rotary switch like the Multiplex to get the A-only, A+B, and the super wonky B -> A configuration. Then I added the Dead Astronaut modulation trick to IC1. I'm hoping to fit this all in a 125B. Wish me luck.
ReplyDeleteThanks so much for verifying the layout, Michael! And I salute your ambition to jam all that into a 125B. Bolder than I am!
DeleteAnd yes, this layout is indeed a fixed A+B configuration. I'd already built the Multiplex Jr. (which is Echoplex-style B-only configuration) and it's my favourite DIY PT2399-based delay. I've also long been in search of a Space Echo-style delay pedal with 2 delays running in parallel (as opposed to Binson-style, where the 2 delays are cascaded) with independent delay controls. So I just chopped out the parts of the Multiplex circuit that weren't to my own (selfish) interests, and that's what is in the layout.
Honest truth is that this is meant to replace my ancient & dead first-generation Kaoss pad, which had, hand to god, the lushest stereo tape delay effect (effect #24) I've ever used outside of an actual Space Echo. If you ever have a chance to get one, do!
Finally got around to putting this one together. Nice work Sebastian. For future builders, be mindful of the cuts. I missed one under a 100k near the input and had delay but no signal. All works well. Really fun. I'm thinking of throwing some modulation on it too. But not tonight. Thanks again.
ReplyDeleteSo glad you're enjoying it, Tom! And thanks for the reminder about the cuts. With so many, missing one or two of exactly the kind of minor mistake I'm very apt to do too.
DeleteTagged. Once again, thank you Sebastian for this cool project!
DeleteTried drawing up a strip layout for the 1776 Mod add-on but I couldn't get it working properly for some reason. Not giving up yet. BUT, I found this little guy on the tagboard forum and it sounds very pretty actually. An option for someone looking for one.
ReplyDeletehttp://guitar-fx-layouts.238.s1.nabble.com/Mad-Bean-Modulaterator-td32614.html
Hey Tom - I'm here to help if you want me to take a look at what you drew up. Also - I have a (verified) very neat and tweakable daughterboard layout based on that 1776 mod board schematic if you want it. My email is still capitalistdeathculteffects at the geemale.
DeleteYeah, thanks. I don't know why the one I made didn't work. In the end, the LDR is just manipulating the delay time a little. But the modulation in the JR circuit is reactive to your playing. So, I don't think it would operate the same way. I don't see how it could. Also, I drew the layout in pencil and then breadboarded it. As I haven't successfully downloaded the software yet. That's another story.
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DeleteSorted out the issue with the mod board. It's just a temperamental little circuit. It sounds really great. This is the best delay that I have built. Recommended. Thanks for your work Sebastian. Also, finally downloaded DIYLC and can't stop messing with it. I've thrown together a few simple layouts for practice. Great fun. Thanks for all the help everyone.
DeleteSo glad that all your hard work with the mod board paid off, Tom! And welcome to the wild world of DIYLC. I find it's kind of a relaxing brain exercise - like sudoku that you can actually do something with one it's solved.
DeleteTwenty minutes working out the layout and a lot longer messing with vactrols. I tried several different daughterboards but the 1776 sounds the most natural. I didn't expect the indicator LED to be an integral part of it's operation. Sounds great now. And the DIYLC is fun. I can get a working layout easily enough. But making the layout look tidy and elegant is a different thing.
DeleteIt took me, literally, an entire 24 hours of staring at the madbean schematic to draw the Rainbow Machine layout. Take all the time you need to get it right. Eventually you'll figure out some ways to make stuff look tidy and all that - I'm seriously stoked that you got started, Tom! Congrats!
DeleteYou're better at it than I ever will be, I'm sure, Chris. It would probably take me 24 years to work out a circuit of that sophistication.
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