Here's Keeley's PT2399-based delay that aims to emulate old tape delays. I think it's the first delay on the blog with built in modulation. It's laid out with board mounted pots for a 125B enclosure with top mounted jacks. FYI, the trimmer controls the gain of the input stage.
Yes... this is more information and photos of the circuit tracing for that same pedal. Aion sells a PCB for it and you can download the schematic and build info. I found the link in the FSB thread that you posted.
@Effects Layout, 78L05 for 7805? Will it work fine? All 2399 builds I made were okay with the L05 though. Just want confirm, if you've tried it or anyone has.
Ive built this pedal completely but i get no sound even when on bypass (checked continuity between joints and its good) but the pedal just gives off high pitched squeel, any idea where to start?
Ive finally gotten it working, I replaced the extremely large capacitors with ones recommended by the pt2399s manufacturers. The size difference is so large I'm not sure how it ever worked.
Hi, built it, works, all pots work, except feedback pot - I just don’t feel the difference when adjusting, can You please tell me what could be the reason?
Hi! Just finished building this, now i have 2 questions: 1. How shuold i adjust 100k thimpot? 2. Delay works, but i cant hear modulation (the rate led works when the depth pot is more then 0, but doesnt dim completely). Where should i look?
I have the same problem. The delay works but the modulation does not. No chorus sound. I have already reviewed the entire circuit but I have not been able to resolve it yet. Or is the modulation sound really discreet?
Done and working perfectly. Thank you very much for the layout. The way I'm going to use it, I don't need the Rate led (removing it does not alter the operation) and decided to replace the Speed potentiometer with an internal trimpot. I also changed the 100k log potentiometer for a linear one (I need more precision in the first section of the round).
Build it, exelent pedal! Used A TL072 instead of the OPA2134. Thank you! replaced a 9.1K resistor instead of the 10K in the level control (after the 1uf on the middel lug of the level pot, to get slightly more echo level in the mix.
Just finished it (perfboard), and I really like it. The rate LED is not very bright unless depth/speed are maxed so I used a bi-color LED for both rate and on/off indication.
Hi friends I made this pedal and works fine but in the Time potentiometer when I put around 7 make a very heavy noise I don’t know what happen any suggestion? Many thanks
Hey everyone, I built this pedal and everything works, except the feedback knob. When I check the values between the pot's legs it shows between 22k~50k on legs 1 and 3, 0~22k between legs 1 and 2 0~50k on legs 2 and 3. Any suggestions?
I've been looking forward to this one! Now I just have to find time to put it together...
ReplyDeletestarting the assembly at 3,2,1 !!!
ReplyDeleteThank you very much!
ReplyDeleteBut this is not the first delay with built-in modulation, the Deluxe Pitch Pirate has modulation also, or am I mistaken?
tiempo 1 se debe conectar en pin 6 de PT2399 y no en el pin 5
ReplyDeleteDavid... I think Paolo is correct:
Delete"Time 1 must be connected on pin 6 of PT2399 and not on pin 5"
Gracias, Paolo.
Right you are. Fixed now
DeleteIs there a schematic?
ReplyDeletehttps://www.pedalpcb.com/docs/MagnetronDelay.pdf
DeleteThat was the reference from the vero blog that presented this initially.
opa2134? thats overkill!! put a TL072!
ReplyDeleteThis comment has been removed by the author.
DeleteIt works! I switched time 1 from pin 5 to 6 and it sounds great.
ReplyDeleteverified
DeleteCan you make the video .. sample to me sory my english bad
DeleteI don't really have a setup for that, sorry.
DeleteHas the pin in the layout been corrected?
ReplyDeleteYes.
DeleteThis comment has been removed by the author.
Deleteis possible make?? http://www.freestompboxes.org/viewtopic.php?f=7&t=20607&p=277360&hilit=schaffer#p277360
DeleteThat's a good one, Miguel!
Deletehttps://aionelectronics.com/blog/tracing-journal-solodallas-storm/
it's the same?
DeleteYes... this is more information and photos of the circuit tracing for that same pedal. Aion sells a PCB for it and you can download the schematic and build info. I found the link in the FSB thread that you posted.
DeleteWill work fine if replace Opa2134 to TL 072??? Thanks
ReplyDeleteYes
Delete@Effects Layout, 78L05 for 7805? Will it work fine? All 2399 builds I made were okay with the L05 though. Just want confirm, if you've tried it or anyone has.
ReplyDeleteEither should work fine.
DeleteHi, as I suppose, I can replace 1N5817 with 1N4001/4007, right? Or even put a jumper instead?
ReplyDeleteYeah, a 1N400x is fine.
DeleteThere is a difference between lm358 and lm358n? can i use the first one?
ReplyDeleteAs far as I know, the N-letter is just a packaging symbol. There's also P version but they can be used interchangeably.
ReplyDeleteIve built this pedal completely but i get no sound even when on bypass (checked continuity between joints and its good) but the pedal just gives off high pitched squeel, any idea where to start?
ReplyDeleteQuizás debes girar el trimbots.... Hay alguna otra modificación para este pedal? Han encontrado alguna falla?
ReplyDeletewhat is the size of the circuit? to print it on the sheet
ReplyDeleteIve finally gotten it working, I replaced the extremely large capacitors with ones recommended by the pt2399s manufacturers. The size difference is so large I'm not sure how it ever worked.
ReplyDeleteHi Justin, can You provide the values of the caps to change and the new ones, please?
DeleteThis comment has been removed by the author.
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteHi, built it, works, all pots work, except feedback pot - I just don’t feel the difference when adjusting, can You please tell me what could be the reason?
ReplyDeleteHi! Just finished building this, now i have 2 questions:
ReplyDelete1. How shuold i adjust 100k thimpot?
2. Delay works, but i cant hear modulation (the rate led works when the depth pot is more then 0, but doesnt dim completely). Where should i look?
Got it working! I missed a small soldering bridge just near time pot.
DeleteGreat delay!
I have the same problem. The delay works but the modulation does not. No chorus sound. I have already reviewed the entire circuit but I have not been able to resolve it yet. Or is the modulation sound really discreet?
ReplyDeleteWorks!! Great sound! Thanks
ReplyDeleteDone and working perfectly. Thank you very much for the layout. The way I'm going to use it, I don't need the Rate led (removing it does not alter the operation) and decided to replace the Speed potentiometer with an internal trimpot. I also changed the 100k log potentiometer for a linear one (I need more precision in the first section of the round).
ReplyDeletehi, did you have to make any modifications to make it work perfectly?
DeleteThis comment has been removed by the author.
ReplyDelete
ReplyDeleteI built the circuit and it is working, but there is background noise, is it normal?
Hello, did anyone test it on a bass? On the guitar it sounds perfect. But with the bass it saturates and distorts a bit.
ReplyDeletehi everyone,
ReplyDeleteDoes the 7805 need a heatsink ?
Should be fine without one.
DeleteI've built this circuit but minw has a slight volume drop. Does the trimpot adjust the output?
ReplyDeleteMine too, is there any solution??
DeleteThe trimmer adjusts the gain output (i think) lol kramtone?
DeleteI succeeded thanks to your website.
ReplyDeleteCurious how to mod it so you can get the modulation on the dry signal (do becomes a chorus pedal). Add a switch off depth 2 and send it to OPA pin6?
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteBuild it, exelent pedal! Used A TL072 instead of the OPA2134.
ReplyDeleteThank you! replaced a 9.1K resistor instead of the 10K in the level control (after the 1uf on the middel lug of the level pot, to get slightly more echo level in the mix.
Is it possible to replace a 100k trimpot with a 500k?
ReplyDeleteI built the circuit and it is working, but there is background noise, is it normal?
ReplyDeleteI changed 10k resistor near 1uf cap level pot to 6k8 and wet signal raised up as i expected
ReplyDeleteedited : my dropped volume issue solved by increasing the only 15k to 80k - 100k, somehow my simple delay cave dweller 2022 nicer than this
DeleteJust finished it (perfboard), and I really like it. The rate LED is not very bright unless depth/speed are maxed so I used a bi-color LED for both rate and on/off indication.
ReplyDeleteMine's not working well.
Delete(Speed,depth,fdbk) not working...i think i have a faulty 2399.
And this LM358 pretty hard to find here.
Hi everyone...
ReplyDeleteIs BA10358 the same as LM358?
Thanks in advance
Hi friends I made this pedal and works fine but in the Time potentiometer when I put around 7 make a very heavy noise I don’t know what happen any suggestion? Many thanks
ReplyDeleteDear friends I solucionated this problem changing the pot of B50k by one pot of B25k with this solution the noise is not existing. Many thanks.
Deletebut i lost 50% of control with this potentiometer, someone knows how take of this noisse with a potentiomether of 50K many thanks.
DeleteHey everyone, I built this pedal and everything works, except the feedback knob. When I check the values between the pot's legs it shows between 22k~50k on legs 1 and 3, 0~22k between legs 1 and 2 0~50k on legs 2 and 3. Any suggestions?
ReplyDeletethe voltage regulator on pcb is 78l05 not 7805
ReplyDelete