Original effects with schematics, layouts and instructions, freely contributed by members or found in publications. Cannot be used for commercial purposes without the consent of the owners of the copyright.
Original Tracer Layouts A collection of original layouts for vintage guitar effects. If you want to build real replica's of vintage pedals, this is the forum you want to look at.
This page tries to keep the available projects indexed.
If you want to share files to build a effect that's not yet (widely) available, it would be a pleasure for us to host it here.
The projects should be verified , though, and at least contain a schematic , some layout file (transfer, vero, perf) and a component layout file .
Incomplete or unverified projects will be moved to the Projects in Progress folder: if you fall upon such a project, please report the...
For a long time I've felt guilty that my pedal board didn't include a compressor. Finally, after about a year of breadboarding, I have produced a circuit that can take on a Dynacomp and win , boasting:
Up to five times more headroom than a Dynacomp
Less noise than a Dynacomp
Same available sustain as a Dynacomp
Fewer parts than a Dynacomp
Cheaper than a Dynacomp
Feedforward side chain
Possibility for all five controls
Fits in 1590B
Millennium bypass
I'm pretty new to circuitry. I have built some kits and recently re-housed and modified a JHF1 Dunlop Fuzz Face. Works awesome. I'm a germanium transistor collector and have learned a bunch over the past year. I just bought a Newmarket Transistor amplifier circuit (pre-made) from the 60's. The Reverb ad said something about being a Deacy amp. It has a basic schematic diagram for the wiring but I've tried a bunch of different things an I can't get...
It’s been a couple of years since I’ve made the first Pelota delay: from the very name, it was a circuit inspired by a few popular PT2399 delays, such as the Rebote series, the Deep Blue Delay, and many others that aren’t that different to be worth mentioning.
Even then, with my more limited experience and knowledge, I knew I could try to do better, starting from the awful, noisy, high resistance inverting input stage you find in the vast majority of them that makes you wonder who did it first...
Hi to all.
Fuzzface has undergone so many modifications, so only mine is missing :D
I set out to redo the fuzzface in a way that would be easy to repeat and not sound as sharp as the silicon transistors. Therefore, I decided to add zener diodes between the base and the collector and it softened the sound. Also, the capacitor at the input is also of reduced capacity so that there is no excess of low frequencies.
Here is the modification scheme:
Peavey, Pavey, Pevy, or is it Pee-vee? One of my favorite amplifiers is still to this day the Peavey Bandit 112 I was gifted for a birthday. That was my first actual guitar amplifier, but even after having the chance of playing and owning fancier, more expensive, more tube amplifiers, I still come back to this one once in a while. Having made a cab sim, I thought it would be nice to have a pocket size version of the pre-amplifier to use with it without bringing the whole amplifier with me....
hi everyone!
this is my first post on this forum.
i wanted to share with you this layout that I had in the drawer for a long time and completed a few days ago. the scheme that I followed is the one taken from madbean current lover (except some changes) . it can mount both the mn3007 and the mn3207 by positioning the bridges under the pcb. I did not have time to make it happen ... but I will do it soon.
I've been playing with the schematics of the Randall RG80/100 series for some time now, and I noticed both green and red channels have very few differences. After some time spent with the layout, I managed to fit both in a single stompbox thanks to the use of a 4PDT footswitch for channel change.
Here's the layout and schematic :
The red components in the schematic are exclusive to the red channel, all other components are common to both channels.
So I breadboarded an Escobedo Push-Me-Pull-You the other day, and while it gives a decent octave up the fuzz was kind of weak (at least, on my breadboarded version).
So I says to myself, let's drop that gain control. Nuthin' good happening under max anyway.
Then I says to myself, what happens if we replace that feedback resistor with a diode, say a white LED? Well, what happens is that first stage becomes a bazz fuss and you get that glorious BF sound pushing (and pulling?) the octave...
You'll all know my hatred of the crappy TPDT and similar footswitches.
I still have customers who insist on true bypass and a solid copper path bypass . Buffered bypass is almost always better, but just to satisfy these (very wealthy / influential) musicians, I frequently use bistable relays. Many players are deeply distrustful of mains powered effects, and (perversely) demand batteries that last for many hours. I also have a large supply of really sturdy SPDT footswitches (like the old...
Hello all,
just to let you know, if like me you use eagle for pcb design and download a lot of footprints from snapeda. I noticed , already 2 errors:
1 the 2N5172 transistor footprint is wrong: EBC instead of ECB (the probably copied a generic 2NXXXX footprint)
2 I tried a 3 colors LED footprint, but when I open it on eagle the pads overlap...
So double check everything before making a PCB...
A long time ago in this very same galaxy, i did a pedal called the Glorious Basstar:
It's a very very very cool multiband bass overdrive, but it's 8 knobs is kind of a no go for a lot of people.
So I went back to the drawing board and made a 4 knobs version called the Small Basstar. It has less possibilities, but still plenty. And it sound as big as it's bigger sister.
You can find a longer description on my website:
It looks like that:
So there is a kit version, and here's everything...
I decided to put an op-amp wrapper around the standard BMP clipper stages, and add my favourite tone control for real versatility. As drawn, it sounds really good, but has more top end than a normal BMP because there's no input loading effect. The capacitor in the feedback around the first op-amp stage could be increased in value (I have 47 nF there at the moment), to give a roll off similar to that which the original transistor input stage would cause, but other players like the brighter top...
I want to build a Tim using Dirtbox layout at and see conflicting informations on the JRC 4558 vs 4559:
According to this page , the only difference would be the slew rate (1 for the 4558 and 2 for the 4559), so that a 4558 would be a poor substitute for a 4559 in this application, right? If so, what would be a proper alternative?
Hi folks
Merry Christmas to all :hug:
Here is a very simple but extremely nice sounding discrete bass guitar preamp for you all to build. Current draw is around 80uA :!:
I recently wound a Music Man style alnico bass pickup - (low inductance but series connected - 3500 turns of 41 awg polynylon per coil :wink: ) and i needed a preamp for it. Everyone seems to be going crazy for the Aguilar / Sadowsky two band bass preamps and i have seen a schematic for the Sadowsky on the web, but thought i...
I finally got around to designing my DIY version of the Suhr Reactive Load. I was able to simplify the circuit with off-the-shelf parts and retain nearly identical frequency characteristics. I haven't formally measured the AC impedance yet, but spice said it should be nearly the same.
AmmoCanLoad01.JPG
Sine wave sweep of the circuit produced a frequency response almost identical to the Suhr, with the major peaks and dips at the same frequencies. One thing I noted was my design had a steeper...
Добридень or hello everyone!
I decided to make an overdrive on 2n7000, because apart from Zvex SHO, I no longer met the use of these transistors in guitar circuits. The circuit is built on 3 transistors, a green LED is used for bias.
At first, I designed the circuit in LTSpice, but then I adjusted the sound by ear.
I don't play the guitar well, but you can get some ideas about the sound from the video :D I also speak Ukrainian in the video, so maybe not everyone will understand :D
The initial...
Shub-niggurath - Lovecraftian deity called also black goat of the woods with thousand young
Second one in series, based on the EQD Hoof traced by Kit Rae at
It has FET blend circuit and Mpsa18 placed in Q1, Leds are Green for Q2 and Orange for Q3, also it has some slight changes in tone stack.
Whole project with gerbers: Shub-niggurath project on GitHub
PCB was tested and assembled and its working.
schematic and assembled pcb:
shubniggurath_schematic.png
shubniggurath_assembled.jpg
Hello, this is my first time posting and I'm not sure if this is the right place to do it. I tried to register with DIYstompboxes but the registration confirmation email never got through despite many attempts.
I am an amateur circuit enthusiast. I designed the attached harmonic tremolo circuit from scratch. What makes it different from other harmonic trems I have seen is that rather than always having the high and low pass filter gains oscillating 180 degrees out of phase from each other,...
This is my last one, I have some of these in store, which I will sure to share if you like.
I like to take circuits I find interesting and rework them according to my taste following some guidelines, which can be summed up as:
-reducing the number of components as much as possible. I think there's beauty and elegance in simple things, and if I can get away with it or have a good reason to, I like to use less components
-standard values. I like to stick to E6 values for the same reasons, and...
I try to post here only the circuits I'm most proud of usually, the ones with lengthy explanations, lots of thought put into them and everything else. This leaves me with a host of other circuits, either because they don't depart that much from the original, or because they're too simple or just neat ideas, that keep piling up, known only to my friends on discord at most. I've decided to collect them in one thread so that I can share them without absolutely spamming this forum. Maybe there will...
I've been inspired to create more stuff in the vein of EHX, this is my take on the LPB-1 circuit. It has a bit of bass roll-off to be less muddy with humbuckers but still be beefy enough for a tele or strat. It's an amp driver first and foremost with just slight coloration. I added an extra switch to add some compression with some current feedback, and a gain control to give some extra boost/dirt. I chose BC107B as they are still readily available, but you can also use 2n5133 for more EHX mojo,...
Last fall I bought a Boss MS-3, which I quite like. I rarely use, but like to have, several effects, so I thought it was perfect. Having three switchable loops was cool, too. Until I looked at all my overdrives, that is. I decided I would like to have more, so I started digging in to how to do it. I settled on using an Arduino nano-based solution that would allow me to connect the Boss MS-3 MIDI out to my switcher so that I can switch loops via patch changes or enable/disable them locally via...
So with the release of the Lizard Queen, I decided to take it as a challenge and design my own octave fuzz in the same vein as something from the 70s, with minimal parts and following EHX design standards of the time. I decided to also go with the Green theme and used the Green Ringer circuit as a base for the design with some tweaks. I rather like how it turned out, and it does light octave to pretty gainy fuzz octave and it has a boat load of output too to drive your amp. I also added a tweak...
Hi there!
I am new here and I would like to share a noise gate circuit that I have been working on.
One or two years ago I was playing around with the MXR noise gate circuit and I did a lot of trial and error modifications to it.
Then I forgot about it, until a few weeks ago I rediscovered this project and finially finished it.
It is using only cheap and standard components (and not many of them) and it could easily be added to overdrive circuits or similar.
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