Welcome to the Revolution

Hi there, welcome to my blog - La Revolution Deux. It's an odd name - but I like it! Here you will find all the info on my various DIY Guitar effects builds, amplifiers and guitars. Everything from a humble Ibanez tubescreamer to the holiest KLON Overdrive.

You may also find a few effects builds that I am looking to move on - usually in exchange for other effects/gear/cash. You can always check my ebay account to see what I've got up for grabs.

Have fun, enjoy the blog - Fred Briggs :-)


Feel free to get in contact with me about anything you see on this blog or with any general questions about guitars, amplifiers and effects, I'll be happy to answer! Just click the button above to email me directly or alternately my email address is fredbriggs2007 [at] googlemail [dot] com

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Sunday, 10 May 2009

BJF - Dyna Red Distortion :-)

[Note] This post also contains the Bearfoot FX Dyna Red Distortion [Note]

Everyone loves the Dyna Red - A great sounding overdrive/distortion circuit from Born of BJFe. A great, dynamic response with a smooth top end ar features of this great unit. Here's a demo video;

Check out the schematic here;

This schematic was reversed from a dyna red which had been modified by Bjorn himself to produce more character in the lower mids, Soulsonic found that by replacing the 0.47uF cap on the feedback loop with a 0.1uF cap that the original sound was restored.

Integrating the bass control of Paul C's Timmy circuit could work wonders, go on, give it a try!

Here's a perf/pcb layout for you;

Many thanks to all involved over at freestompboxes.org :-)

And now the Bearfoot Dyna Red Distortion, here's the scheme;

For more great info on Bjorn's stuff get over to the BJFe forum (http://www.bjfe.org) and ask some questions, Bjorn always puts an interesting answer down for you :) Get involved with the HoneyBee Project too!


  1. Monsieur Briggs, I think you meant .47n, not .47u and .1n not .1u for the feedback loop cap in the BJF schematic; ie 470p vs 100p.

    Love your site and visit it frequently, a tremendous resource with great circuit insights from which I've learned a lot. Many thanks!


Comments are welcome on Revolution Deux. However, please do not spam links to unrelated sites - these comments will be removed! Thanks - Briggs.