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#51

Open Discussion / Re: The secret M117 flanger

Last post by jessenator - May 08, 2026, 03:57:06 PM

This gives another hair brained idea of what could be done to mimic the more lush sounding mod effects out there: parallel/series, multiplexed designs using more commonly available BBDs?

I mean, someone's thought of it, I'm sure. Nihili novi sub sule

#52

Open Discussion / Re: The secret M117 flanger

Last post by jwin615 - May 08, 2026, 12:17:42 PM

Moto version of the CD4013. Can produce a two phase clock source, guessing one for each chip.
The demo Jessenator posted reminded me of the couple of dual clock chorus pedals I have. Sounded like a separate modulation underneath the main modulation to my ears.
Maybe they have one 4013/14013 running as divided by 2 from the first clock?

#53

Open Discussion / Re: The secret M117 flanger

Last post by jessenator - May 08, 2026, 03:54:04 AM

What the heck are those?

Motorola multiplexers as clock(s?)

two MN3004s, two multiplexers ...mod isn't in my wheelhouse (yet), but I'm sure one day non-scientists like myself will make sense of what's happening here.

There are only TL072s on the top, as far as I could see (U10 and U5 were both 072s. Surprised not to find and 022):

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#54

Open Discussion / Re: The secret M117 flanger

Last post by jimilee - May 08, 2026, 12:46:01 AM

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What the heck are those?


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#55

Open Discussion / Re: The secret M117 flanger

Last post by jessenator - May 07, 2026, 09:30:09 PM

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#56

Open Discussion / Re: The secret M117 flanger

Last post by museums - May 07, 2026, 05:50:11 PM

I haven't poked around in mine but is the SAD1024 MXR parallel multiplex or both sections in series? I thought it was multiplex which would make sense here as well with two devices and short delay times. I also haven't checked the clock freq here.

#57

Build Reports / Re: VFE Choral Reef Build

Last post by Gilbertackwell - May 05, 2026, 02:32:43 AM

Nice build, VFE layouts usually sound great when done right. Did you stick to the original component specs or tweak any values during assembly?

#58

Open Discussion / Re: The secret M117 flanger

Last post by jessenator - May 03, 2026, 04:08:42 AM

#59

Open Discussion / Re: The secret M117 flanger

Last post by jessenator - May 03, 2026, 03:56:30 AM

Now if we could just get a schematic...

I'd have to work up to it myself, having never traced anything more than a FF  I wonder how much it would cost for Robert over at PPCB to trace it... man works miracles. Or Brian. I'd gladly loan mine to either of them. Looks like only a 2-layer to my eyes. Weird grid-style ground plane, like VFE does.

#60

Open Discussion / Re: The secret M117 flanger

Last post by lars - May 03, 2026, 02:52:16 AM

The MN3004 is definitely an odd duck. I think it would be more likely that a company like Xvive would make a new SAD1024 before taking on a chip that wasn't really used in guitar effects. That's what makes this version of the M117 so interesting...remember it has two MN3004's in there! It's probably the only guitar effect to ever do that. And it ultimately does sound/feel different than just going with an MN3007, despite the fact it's the same number of stages.
Now if we could just get a schematic...