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
Here is the second installment of my bass amplifier series - the Ampeg SVT in 9v pedal friendly format.
Plug this pedal into any high wattage power amplifier and experience the Super Valve Technology sound without tubes :wink:
This design is based on the original Ampeg SVT but with the 5 frequency bands mid boost / cut rotary switch used in the later SLM MkII model.
I left the bass cut option in the ultra bass switch control out as well just as they did in the MkII :wink: However I modeled the...
I’ve always liked phasers, in fact one of my first pedals I’ve ever built was a Phase 45 clone. Not only I liked how it sounded, another main reason for choosing it (other than the complexity) was that I only needed two matched JFETs instead of, for example, four for a four-stage phaser.
I’ve been sitting there, content with my box, for some years, until recently I’ve heard of the Project 447 phaser on an old ETI magazine. It wasn’t perfect by most accounts (the long string of 741 op-amps in...
A simple boost/preamp circuit I put together recently. The JFET starts to clip in a pleasingly smooth manner if you really dig in so the gain control allows you to set how hard you need to play to make this happen. The simple active two band EQ gives a nice range of tones for not many parts.
It's been a year and a half since I made the Dudson Narrowcast , a reworked version of the popular Hudson Broadcast. It was fun and sounded nice, but it wasn't perfect, and I left it sitting there. The issue I couldn't gulp down was that i had to omit the feedback lowpass capacitor because of oscillation issues. That and more has been fixed in this V2. This update is also an intriguing perspective in how much I learned since then. There's always more, but at least I feel like I understand the...
INTRO
Hello everyone. The Blues Driver always pops up among the most popular overdrive pedals, no doubt because many people like how it sounds, but also because it's easy to find and relatively affordable, being from one the biggest pedal company in the world. It's not as popular in the DIY world, aside from mods, probably because it's not the smallest circuit and uses many transistors in a discrete op-amp configuration. Also since you can get it anywhere for cheap, I guess most people just...
Here's my version of Bajaman's EVH overdrive , I call it the mini EVH. A friend brought his interesting circuit, which is directly inspired by the 5150 preamp, to my attention and I wanted to give it my own twist.
To Bajaman: know that in no way I'm saying that my version is better or there's anything wrong with its inspiration. They both sound great, I think of it as two different means to achieve more or less the same goal. I hope you're happy one of your circuits is getting “the treatment”...
Good morning or evening friends depending on how the case may be.
I have not been able to play for a while but I was digging up some of my old stuff while I was going through chemotherapy.
I've forgotten about this wonderful little practice amp that I built on a piece of purfboard.
I have a problem with my hands so please cut me some slack on the drawing.
It was the easiest way for me to do it and also hopefully it shows a little bit easier for people who are newer.
Before I get into the...
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.
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...
We just released an open source, DIY tape echo you can build.
It's built using 3D printing and a cheap walkman style cassette player. Everything needed is free online (goto our website or our github page to get the files). There's some detailed build instructions on our website.
hey guys,
any help would be appreciated...
i built a Diaz Texas Ranger Treble Booster. i used the exact part values and i got the proper bias voltage but it sounded to me more like a mid boost with a volume boost rather than a treble boost. and it barely distorts by itself...why is that and is it normal?
MOSFETs, the incredible devices at the core of modern devices, computers, power supplies and… distortion pedals? For some reason, there’s this constant fascination with them: regardless of them being used as diodes, amplifiers, inside op-amps or inverters or even in output stages, the presence of MOSFETs somewhere confers the circuit a powerful charm and the inevitable association with the seemingly unrivaled sound of vacuum tubes.
That said, very few circuits have attempted to use active...
Hi all, this project was one that I wanted to do for a while. It's been pretty fun digging into how oil can delays work and sound. Don't Tell Ray has a front end that can get gritty and dirty, a sinusoidal LFO, modulation speeds that match the hardware, and a tone control that allows the delays to stay nice and clean or dark and mellow. I have a full rundown of how the circuit works on my page about it here: Here is the demo:
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...
Hi Folks
Merry Christmas to all :thumbsup
Here is a little something that i have been working on for some time - it is very low noise, extremely easy to customise and it does not use an inductor.
I built mine on a piece of stripboard - I may design a pcb for this in the new year. I used a OPA4134 quad opamp but a TL074 or two TL072 opamps should work fine - the choice is yours :wink:
I have suggested components that can be altered to zoom in on your favourite wah response. (I am currently...
Here is my version of the Hiwatt DR103 normal channel preamp and amplifier output stage - I have not built it as yet (waiting on some enclosures) but it should work ok :wink:
cheers
bajaman
Baja Hiwatt DR103 amplifier overdrive 9v 120318.GIF baja hiwatt dr103 vero layout.png baja hiwatt dr103 vero cuts.png Baja Hiwatt DR103 amplifier overdrive 9v parts not on vero 120318.GIF
The master volume can be omitted if desired - simply replace it with a 22k resistor and connect the treble control...
Hi folks
Here is an updated version of my Baja SLO overdrive pedal - although the original design works very well, i wanted to get a bit closer to the individual gain stage's frequency and phase response characteristics and the only way I could see to do this, was to use four gain stages (not two as in the original BAJA SLO) matched to the actual four gain stage amplifier schematic :wink:
cheers
bajaman
Baja SLO MkII overdrive pedal 9v 030218.GIF
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 wondered if I could swap the LED/LDR (or opto) for a FET, mosFET or 4049 gate (inspired by the PUP phaser series).
Here's the original:
I wanted to add a buffer, and that leaves me one opamp left on a quad, so I thought: What if I add dry non-inverted signal to the inverted filtered signal? The other frequencies should cancel out and the peaks should get peakier , right?
LTSpice kinda agrees:
( r being the resistance from point A and B to GND, where the opto is originally)
Recently I posted my take on bazz-fussifying the Escobedo Push-Me-Pull-You . I've been so pleased with this little octave fuzz I thought it was worth playing with even more.
The PMPY is divided into two sections: A simple gain stage, followed by the push-pull circuit that cancels out the fundamental to give the octave. So, I got thinking, what happens if we add a second stage of fundamental cancellation? Well, it sounds pretty interesting, that's what.
Hello everybody, I was searching a sort of schematic for the concert bass mod , or at least some info on which component to change/add to realize it, starting from the classic double SHO design...
Anybody knows something about it?
Thank you!!
Gianmarco
ge diodes for sure. put 'em in d3 -8. boom. def what i did on the original.
for the quad opamps, i went with tlc274cn
out of all the quads i had, these seemed to quack and sound the best.
intersil ca3080e's a must
there's new video uploading as i type this. it sounds pretty good. i haven't quite got it dialed in right yet but its pretty close. it even quacks without the fuzz in front of it.
so for mods, i went with a 500k trimmer for r5, which sets the gain of the first stage. turn til...
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