Recent posts

#51

Open Discussion / Re: The secret M117 flanger

Last post by jessenator - July 07, 2026, 01:52:00 AM

Fine. I'll joins the club. Thanks for the heads up lars

#52

Open Discussion / Re: The secret M117 flanger

Last post by jwin615 - July 05, 2026, 08:06:45 PM

Fine. I'll joins the club. Thanks for the heads up lars

#53

Open Discussion / Re: The secret M117 flanger

Last post by lars - July 05, 2026, 05:30:32 PM

Another one popped up for cheap on Reverb. At least the listing correctly identifies it as "1997", but it's still way below what these things are worth:
1997 MXR M117

#54

Build Reports / Re: LFX Countdown Phaser (Ten ...

Last post by NorthCoast - June 29, 2026, 05:35:00 PM

Wow, very nice!

That's a lot of parts, I hope you didn't have to do any troubleshooting!

Question... It looks like there are mounting holes on the board on the bottom left and right, and you've got something there, but I don't see anything on the top of the enclosure? Where are those bolts going?

#55

Build Reports / Re: LFX Countdown Phaser (Ten ...

Last post by jimilee - June 29, 2026, 12:37:56 AM

That is awesome. What great phaser that is. How do you like it?


Sent from my iPhone using Tapatalk

#56

Build Reports / LFX Countdown Phaser (Ten Pipe...

Last post by Cybercow - June 28, 2026, 11:23:26 PM

Lectric FX's Countdown Phaser is a reproduction of the A/DA Final Phase™ circuit, vintage 1979, somewhat different from the reissue. It has been designed for true bypass, and uses a charge pump/regulator setup for 15V operation using a standard 9V power supply. All built out and calibrated.

I am very impressed with this 10-stage phaser. Lotsa variety with the settings - and the trim pots are all still in their initial half-way settings. The phasing is just amazing with excellent artifacts of doppler jet swooshing and oddball modulation sweeps. This one was worth getting excited about.

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#57

General Questions / Re: ZenGlory not working

Last post by jessenator - June 28, 2026, 01:58:38 PM

I missed the initial post, but yes , I think you've come to the correct conclusion of "AI led me down the wrong path."

I'm not sure I've seen a single success story involving its use with what we do. I haven't checked the rest of Wampler's course material, and no disrespect to him and what he's done for the diy scene,  but I think jumping onto the LLM wagon wasn't the most sound solution.

#58

General Questions / Re: ZenGlory not working

Last post by rpark71 - June 28, 2026, 12:18:24 PM

I'll reply to myself...I think AI led me down the wrong path, many wrong paths to be honest so not sure this layout would ever function as planned so reverted to original ZenDrive layout, and pedal now works and sounds great.

#59

General Questions / ZenGlory not working

Last post by rpark71 - June 23, 2026, 04:52:02 PM

Hi all,

So I've built a pedal, using a Zen Drive tagboard layout from madbean and wanted to modify slightly so it had a toggle switch to go from Zen Drive using the BAT41 diodes and cleaner clipping, a bit like Morning Glory, using red LED's - a 'ZenGlory'. So I used Gemini, then pedal course version of ChatGPT to verify the new v14 layout (attached, as is original layout from madbean). So built the pedal and power LED comes on, I get bypass sound when pedal on/off, but not effect sound. One of the red LED's is permanently lit, but goes out if with power to pedal, you touch sleeve to metal jacks or enclosure. ChatGPT (DIY Guitar pedal pro v1.3 via Wampler pedal course) has gone through various tests using multimeter and audio probe. The idea was to power this at 18v, which the IC can do, but in testing I've used 9v from isolated power. Here are measurements:

IC voltages: pin 1 4.7v; pin 2 4.7v; pin 3 4.5v; pin 4 0v; pin 5 4.6v; pin 6 4.7v; pin 7 4.7v; pin 8 9.4v

Q1 is S 3.6v; D & G 4.6v
Q2 is S 3.6v; D &G 4.7v

When using audio probe I got guitar signal (not effected) at input, at switch lugs and then it stopped at tag 7 on layout v14. I had got R2 and R7 resistors mixed up, but replaced C3, R2 and R7. I still have same problem. So thought I'd post here for any thoughts, as about to give in. I feel like it might be a ground issue somewhere...it always seems to be a ground issue with my builds!

Any help appreciated.

cheers, Rich

#60

Open Discussion / Re: The secret M117 flanger

Last post by Scruffie - June 15, 2026, 10:58:35 PM

And in case anybody was wondering what crazy combination of transistors I have in there, check out this mess:
Q2 - BC108D (Metal can)
Q3 - MSPS7009 (older yellow top)
Q4 - 2N3904 (older silver face)
Q5 - 2N4125 (tayda stock)

I put sockets in those positions and swapped around just about every transistor I had on hand until arriving at that bizarre combo. The 5087/5088 combo just didn't work. There was hardly any modulation whatsoever. It had me checking and double-checking all the resistors and caps I put in the LFO/Clock circuit to see if I made a mistake somewhere. In the end, simple transistor swaps brought it to life. I would highly recommend putting sockets in those positions and just trying out different transistors. It's amazing how drastic of a change it can make. IE, if I take that 2N4125 out of Q5 and swap in a 2N5087, the pedal goes completely anemic. Ditto for any of the other positions.

Try a 2N3906 instead of 2N5087, it's better suited.