http://en.wikipedia.org/wiki/Overdrive_%28music%29

"A guitar amplifier's tone controls shape a different power-tube distortion voicing if the tone controls are set to emphasize the bass or treble. Extreme settings are most popular in heavy metal. Increasing the bass and treble while reducing or eliminating the centre midrange (750Hz) results in what is popularly known as a "scooped" sound (since the midrange frequencies "scooped" out). James Hetfield of Metallica used this tone on many songs on Metallica's first four studio albums. Conversely, decreasing the bass while increasing the midrange and treble creates a harsher sound. Kerry King and Jeff Hanneman of Slayer have both used midrange-heavy tones since the mid-1980s."

Eagle notes

So far, I've been using the Gaussmarkov (http://gaussmarkov.net/) libraries (http://gaussmarkov.net/eagle/lbr/gm-lbr.zip) mostly. I increase the pad size with the DRC to 20 mil (http://gaussmarkov.net/wordpress/tools/software/eagle/setting-all-pad-sizes/) and draw the signal traces with a thickness of 0.024.

After exporting the PCB image (900 dpi), I import it into Photoshop, invert the image and reduce the size to 40% of the original. I check scale of the printed image by seeing if the length from resistor hole to hole is between 0.6 and 0.7 minimeter.

MXR Distortion+ (Tonepad PCB)

Unfinished: as can be seen, I still need to do the deco...

Tonepad - Sinamp (Sans Amp GT-2)

From the Tonepad website (http://tonepad.com/project.asp?id=22). This was the last project where I bought the PCB.












































Once finished, in the California setting with TL072IP (low noise) ICs I ended up with a whistle sound after stopping a note round the 7th/9th fret of the G string. Replacing the TL's for NE5532P's fixed the problem.

Run off groove - Supreaux (Supro 16T preamp)

From the ROG website (http://runoffgroove.com/supreaux.html).

Blog manifesto (Statement of Purpose)

Post some stuff on DIY guitar pedals that I've been working on in the last 3 months to create somewhat of a record for future reference...