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...
I have the present circuit on my breadboard, and I would like to submit it to more experienced minds to see if there is any major flaw. My knowledge in electronics is purely DIY, on-the-go acquired, so even though my reasoning appears, ahem, reasonable, I'm always afraid to miss something crucial. So far it sounds nice to me, will probably mess with the tonestack and a few other values, but before going any further I hereby submit it here for criticism and observations.
I went back to the Fuzzrocious Ram The Manpart project that I didn't finish after the mods. I threw away (after modification with 10k pot//4k7 for better control) the starving circuit and wanted to get more overdrive-sound from it.
However, I did not know how to connect a suitable gain control. At the input, I didn't want to reduce the already low input impedance of the LM386, and at the same time I wanted to keep the minimalist form of the entire circuit. Finally, I...
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 posted this over at DIYSB a little while ago and thought I should also share it with you good folks.
Like similar designs - DOD 280, Hollis' Flatline, Mictester's Really Cheap Compressor, etc. - it is a one-knob (+ level) dual op-amp optical compressor. What does this do differently? The LED driver is a little different (increasing the resistance into the second op-amp (-) input decreases the current in the LEDs) and it is somewhat self compensating - when you crank up the compression (and...
Hopefully I'm posting this in the right place, if not just re-direct me to the proper place for this sorta post.
So I have a friend making me a pedal as a favor. He’s not on here, so I’m asking for him (I just wanna help however I can).
My idea is basically harsh noise pedal, an ‘Instant Tinnitus’ pedal, w/ a focus on painful noisy highs all around the fretboard + a consistent sound that I can control easily enough, that isn’t quite as monochromatic as a lot of other noise effects (hopefully...
So I've been trying to design my own compressor for guitar purposes.
I took the Moritz Klein eurorack compressor as a jumping off point. It uses diodes as a the control element and all in all is pretty clever. I've attached a schematic.
Screenshot_20231107_143556_Drive.jpg
I was drawn to it as it doesn't use any hard to find/expensive parts or anything not passed by RoHS
Firstly I shifted it to the typical 9V unipolar power supply.
Then following that I noticed the envelope detector would...
Hi folks
I have heard a lot of positive comments regarding the Electro Harmonix Small Clone, so I thought I would build one to evaluate it.
I found a layout and schematic etc., at Francisco Pena's Tonepad site, but I wanted to fit it into a Hammond 1590B case with a DC input socket and battery, and the Tonepad board was too long to fit, so I set to work reducing it's size.
I wanted to mount the potentiometers using 30 amp fuse wire to the rear (tracks) of the circuit board. I used stick on 3mm...
At one time I was quite involved into J-FETs. I was originally drawn to them by (dare I say) the legendary A Discrete FET Guitar Preamp schematic by J. Donald Tillman. After a brief acquaintance with the functionality, I left the J-FETs and went my own way of buffers with bipolar transistors. Later I was looking for a schematic that would emulate valves and not be complicated, so I found the Fetzer Valve and I was back again.
I really liked the strict approach of the authors of runoffgroove to...
Hi everyone,
I've follower this schematic (reference from datasheet TDA2050) to build a single channel dual IC bridge power amplifier, dual supply.
tda2030-bridge-amplifier.jpg
For everyone that struggle to understand why they wont achieve max output power, voltage limit must be reach and I think some resistor value weaks also would help.
Short story: Ive blown (I think) the ICs when i switched from low voltage dual supply from voltage divider, low current (TEST) to FULL RECTIFIER 18-0-18...
This 5 Band EQ uses the Rohm BA3812L 5 point graphic equalizer chip. It's a project I started last year but due the chips irregular pin spacing I was never able to breadboard and experiment with it. I had a rough layout drawn out so I decided to give it a try using Eagle. This was my first attempt with a PCB.
This project is from the BA3812L datasheet. With the exception of the cap values used for the different frequencies it is taken part for part. It has worked well after a booster or...
I have a guitarist friend who uses a TC Ditto+ looper pedal to store and replay his backing tracks..... But he hates having to tap twice to stop the looper.
So I built him a simple interface, to allow him to tap once to start -- and once to stop.
(I made some project notes here: www.loop.jp137.com )
It's a simple project using CMOS logic (no microcontrollers involved!) Might be of interest to other looper users who don't like the 'double tap' stop requirement?
I went on to try to find a matching pair of diodes for one of my built.
Long story short, I ended up measuring and testing a good part of all odd diodes I have had accumulated over the decades of tinkering.
Some are germanium, some are silicon, including Schottky, etc. I won’t talk about whether any of these sound “smoother”, “warmer”, “rounder”, “fuller”, etc. I don’t believe in tone wood either; nor that a measured 33nF cap will sound different than any other. Disclaimer being out of the...
I don't usually design boosts or dirt box, but I thought I would have some fun with the Fuzzrocious Ram the Manparts circuit. I've made a significant number of changes, but thought I would pay homage to the name of the original with Rochambeau (or at least that's what my Southpark watching friends tell me). It's a simple affair, with huge amounts of boost on tap. As a standalone dirt pedal it's squarely medium gain is all, but it's quick, dirty, easy, and effective. If you want to build one,...
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...
Hi folks
here is something a little different - a bass amplifier 9v effects pedal :shock:
not built yet, but will post pictures when it is :wink:
cheers
bajaman
Baja Orange AD200B MkII bass head 9v pedal 270318.GIF vero layout.png vero cuts.png Baja Orange AD200B MkII bass head 9v pedal parts not on vero 270318.GIF
Sometimes things don't go as you planned. You try and try again but the issues persist. I've started working on this project 11 months ago, but it's finally in a state I'm happy enough with to share it.
Whether I want to record easily or practice without disturbing others, I'm fond of Guitar Rig. One amplifier model it features is the Hot Solo, a Soldano SLO (100). Since it's the foundation of my “no-frills metal” preset, I thought it would be fun to turn the preamplifier circuit into a...
Here is a little onboard guitar pre-amplifier I have been using that has a very low current draw ( battery will last for years), and very low noise. Over the coming posts in this thread I will attempt to show how it can be used in a variety of ways to fine tune the tonal response of any guitar it is installed in. Okay, so why another active guitar onboard pre-amplifier ? Well, most of the designs I have encountered quickly flatten batteries, especially if you forget to unplug your instrument...
Do you remember the old-fashioned way of doing bass compression? It used an LDR across the volume control illuminated by an incandescent lamp across the speaker terminals! It was a simple method back in the 60s....
This compressor is almost that simple! It uses a handful of cheap components (I built one for £9 including hardware!), but works really well. Guitarists who've tried it often ask Is it on? , but miss it when it's off! It's quiet, and has good squeeze without the gain-change...
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...
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:
This is NOT a beginner's project.
This was traced from a recent B K Butler pedal and has the bias pot modification which alters the voltage on the cathodes of the 12AX7 tube.
You will need a suitable 12vAC power pack for this pedal - the original has a small toroidal mains transformer fitted internally near the front of the case.
The input and output sockets are isolated from the chassis by plastic insulating spacers. The earth pin on the input socket is connected by a parallel connected 100...
I had wanted to make a compressor circuit for a long time, because it's a popular and somewhat easy to make effect, but the existing DIY offer left something to be desired. You should be ready to accept some compromise, in the form of: noisy and hard to find OTA chips; expensive and hard to find (in THT at least) VCA chips; hard to find (again in THT) and fiddly JFETs; circuits that underperform in some way or another, or; circuits that aren't well translated to instrument input and stompbox...
Here is the latest - the Baja 59 Tweed Bassman 9v pedal.
Enjoy :wink:
bajaman
Baja 59 Tweed Bassman amplifier overdrive 9v 090318.GIF Baja 59 Bassman layout 090318.png Baja 59 Bassman vero cuts 090318.png parts not on board.GIF
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