Hi good folks,

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 was...

I am interested in building a pedal and wonder if a compressor would be a good idea.

I’m a relative newbie to this so appreciate any advice on what type to get that’s not too difficult to make. Ideally a compressor with a mix knob

Quite a simple thing.

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...

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...

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...

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...

Currently I use my amp head with modulations effects in the FX loop.

I would like to add a tube preamp in the power amp and keep modulations effects.

So I'm looking for a looper that would allow me to switch from preamp to return while retaining the modulations.

Something like that. Do you have an idea of ​​the diagram?

fredamp.png

I want to do that :

routage.pdf

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:

And here is the video:

Criticism and...

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