Guitar Efx
Guitar efx vero layouts, modifications, and builds by POTAR
Modified DOD FX70 Stereo Flanger
I have had this old DOD Flanger kicking around in my parts box for about 10 years. I finally got around to testing the mods on it, and WOW! It’s a killer. From added LFO tones and noise to delay-like repeats The mods are pretty simple, you replace the 3 internal trim pots with comparable-value … Read more
Standard Epiphone P90 wiring
I recently stripped down and glitterized an Epiphone Special that came equipped with dual P90 pickups. After not really finding any decent wiring diagrams for this particular set up on Google, I decided I should just draft one up in DIYLC. This is the standard wiring as I saw it when I removed the backplate; … Read more
Sub Mini Tube Booster with the JAN 6418
Here is a stripboard layout I did for a preamp/boost using the JAN 6418 subminiature tubes I have been experimenting with lately. It is based on the schematic from the previous post, but rather than powering the heater with a 1.25-volt battery, I utilized an LM317 voltage regulator and a 100-ohm resistor. This ultra-simple circuit … Read more
Low Power Vacuum Tube PreAmp
I have wanted to learn more about vacuum tubes for years but was always put off by the extremely deadly power requirements. Working with low power sources for so long, I have blown my fair share of capacitors, which is scary enough for me. Recently I discovered the world of sub-miniature vacuum tubes and the … Read more
Germanium Fuzz using MP16b PNP transistors
The perfect layout for using the MP16b transistors that I have been importing from Russia. This layout is based on the Sabro Fuzz Face layout. I moved the bias from inside to the top so you can go from scuzzy velcro to full-on fuzz. I also dropped a line from the vero that was unused. … Read more
1590bb style enclosure drilling template
There are many different ways to mark your enclosures for drilling, from measuring and marking with a pencil to freestyle marking or even taking a drill it and see approach. After many years of suffering from lopsided drill holes and jacks that came dangerously close to pots and switches, I started printing out drilling templates … Read more
SUPER-FUZZ clone time
From underground alt-punk legends like the Butthole Surfers and The Cramps to full-on heavy metal icons like Black Sabbath, the SUPER-FUZZ pedal has a distinct sound that is heavy, fuzzy, and righteous all at the same time. The Univox Super-Fuzz pedals are the most common version of the circuit but Shin-ei licensed the design to … Read more
PT2399 Noise Ensemble delay
The Noise Ensemble is an extremely noisy delay that can easily be pushed over the edge into self-oscillation. Based around the PT2399 IC; it has a built-in VCO, 2 op-amps, and 2 low pass filters crammed into a 16-pin dip case! It can get very loud! Check out the datasheet. I have built more than … Read more
