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...
Hot off the drawing board - vero layout to follow shortly :wink:
This is the amplifier that after the VOX AC30 changed the sound of British rock for ever - based on the circuit of the 1959 Fender Tweed Bassman it used the European EL34 entode output tubes because they were a lot easier and most probably a lot cheaper for Jim Marshall to purchase in post WWII Great Britain.
enjoy and have fun :D
bajaman
Baja Mars Hall 1959 Plexi amplifier overdrive 9v 090318.GIF
After finishing the Disappearing Act ducking spring reverb, I decided to do a version that uses the Belton brick for people who want something smaller footprint or who want some other features. I chose the BTDR-3 since it can do adjustable decay time and stereo output. The Escape Artist uses the same envelope follower topology, but the reverb path is different. The optical compression is the same, though tailored for the output of the brick. It's capable of huge washes. It can also do mono or...
So many different orange amplifier schematics and so many different topologies - I settled on the 72 graphic mkII to base this pedal on.
Hope you like it - here is the schematic for now - vero layout to follow shortly :wink:
cheers
bajaman
Baja OTR120 Graphic MkII pedal 9v 160318.GIF
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...
I've cloned the Xotic EP Booster from layouts and a schematic I've seen online. the HPF does not function if you follow the traced schematic. Suggestions have been to replace C2 10uf with a 200nf. I'm still finding this quite aggressive filter.
I noticed the F.briggs modded this circuit and removed this filter from the circuit but kept C2 10uf cap in place. Please can some help me understand what C2 does. Should I also be changing the value of C3 100uf rather than C2 10uf or both? I'm not...
Introduction
On my quest through re-imagining effects pedals, I felt like envelope-controlled filters deserved some attention. As it is usual, my motivation comes from the unsatisfaction with existing circuits: from the widespread use of OTAs, with their drawbacks in terms of distortion and noise, and limited availability in some cases; to one-trick pony circuits; to circuits that require matching; circuits whose complexity isn't reflected in the features offered. Ripple is another common...
This is my take on a classic variable state filter with optocouplers!
I added a few cool features:
- A possibility to control it with an envelope follower, an expression pedal or a control voltage. (You can actually use the 3 together, but it's a bit weird how it reacts!)
- A mix button, which allows for cool blending, phaser-like sounds.
Using the CV in with a good LFO, you can use it as a LFO-wha, Tremolo or 2 stage phaser.
It has a few imperfections though:
- It does not go into self...
Hey everyone, I recently finished my Disappearing Act design. This is an all-analog spring reverb driver with optical compression/ducking. The spring reverb driver section isn't terribly novel, but combining it with a full-wave rectifier envelope follower and optical compression on the reverb signal makes it so that you can get the studio effect in a pedal. It is designed for an 800 Ohm tank, so there are tons of options for tank sizes and decay times available. I have found it to be a ton of...
Hi,
I've some trouble to getting this simple circuit works.
elZKR.png
First question. The non inverting Input is @1/2Vcc. Other schemes put it to 0V. What's the difference?
If I've correctly understood, this summing voltage config create a virtual ground point at the inverting input. This point should be equal in voltage to noninverting input voltage. Am I right?
Second. The buffer (gain 1 noninv. classic buffer scheme) is connected to output of the uppper schematic. Should I interpose a...
I am going to build a little splitter box to send two copies of the same mono signal chain to sample into the left, right or both channels of a stereo chain consisting of BOSS DD7-> zoom CDR-70 -> DITTO X2. I'm using a WOBO dual looper to route the signals
For the actual buffer, I was just going to use a single BJT or FET but hang two separate output caps and resistors from the emitter/source. However, a dual opamp doesn't take up that much more space and would require only a couple more...
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
WhatsApp Image 2023-07-18 at 11.23.46.jpeg Hi, I'm a bit confused :scratch: with the thousands of D.I Box schematics out there on google. In the end I decided on one that I found on the E.S.P (Elliott Sound Products) page using a Triad TY-250p transformer.
Any suggestions on this particular circuit? or about how I have wired the transformer? It can improve?
Thank you. :wink:
it's a mod I did to the mini booster that was called the Fat Boostered on the GGG site. I called it the Fat Bastard (it was when Austin powers 2 came out that i did it), but GGG changed the name when they posted the schematic. Paul C
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This is one of favorites among the booster circuits!
Extremely versatile and sounds real good!
Layout; Correction by PaulC : C3 should be 33nF or 0.033uF; JFETs 2N5457...
I like to use relays on the builds which I box up, and I have been making use of a simple relay design by Chuck D. Bones at the PedalPCB forums:
relay-v1.1-schematic.png
I'd like to share the schematics, gerbers, etc here:
There is a through-hole version for self assembly. I've been using this for a while.
relay-v1.1-build.png
I also did a SMT version for assembly at JLCPCB. It's the same schematic but a smaller footprint:
relay-v2.0-build.png
I'm putting together a simple mixer, following Jack Orman's design...
I'll have 10K pots on the inputs... and it will be stereo...
and there'll be a C-Moy headphone amp in the end... (it already has a charge pump, producing 18V)
.....
As far as I can see, in mixer design they'll use an opamp to boost the input...
and there'll be other inputs as well without that... for the line level inputs, so to speak...
my little practice headphone amp will have 3 pots atop of it,
level in #1...
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 recently got a Tonex pedal and wanted to capture a couple of the tube amps I've made. After some digging, I found that you don't need the Tonex Capture. All you need is a decent audio interface, a mic (or two) and a reamp box. (There's a good video on YouTube by Pete Thorn showing this.)
I didn't have a reamp box so I decided to build one. It worked out much better than expected so I'm sharing my design in the hope that others will find it useful.
My take on using the TDA7052A chip as gain cell in a compressor pedal:
Project page link
Description:
the compressor is a feedback type one, uses the TDA7052a's two opposite phase low impedance outputs to drive a full wave rectifier and an output buffer. This is a simplified and optimized version with, IMHO, the most useful features available as knobs.
Controls:
Input Gain - adjust it according to the input signal amplitude to avoid the clipping. Lower settings for humbuckers, active...
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...
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.
Here is the latest in the series - the Mesa Dual Rectifier high gain channel.
Not built yet but should work fine :wink:
have fun :thumbsup
cheers
bajaman
Baja MDR overdrive pedal 9v 060218.GIF
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.
Hi folks
Here is my take on the Bogner Uberschall preamp frequency characteristics - once again 9v friendly - just a gain and level control - put it in front of any clean Fender type amp and experience the midrange snarl of the Uberschall :D
I was a bit shocked when I noticed the need for a 22n high frequency capacitor at the first gain stage input and also the large 39n capacitor in the feedback loop of the third stage, however these values were necessary to match the individual tube gain...
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