Again, there are many ways to do this passive resistor load. A lot of these techniques, including the ones used by many commercially available load boxes, don’t maintain a constant impedance load to your amp as you change the attenuation. People debate whether this is important. You can search the net for these discussions. I decided I wanted to keep a constant impedance load to my amps.

By Sid of Stone Marmot
I wanted a low power guitar amp I could crank up to get natural tube distortion without being obnoxiously loud. I also wanted something light that I could easily carry to more laid-back jams. I also had a small tube amp lying around that used a pair of 12AB5 [...]

By Sid of Stone Marmot
A past employer misspelled my name on an award they gave me. They gave me a corrected award about a week later. But this left me wondering what to do with the misspelled award.
The award was a plate made of solid bronze that was about 10 inches in diameter. The plate [...]

By Sid of Stone Marmot
This page includes some pictures of the hovercraft I built.  Some data on the hovercraft will appear in a future post on this blog.

This photo was taken part of the way through the build process. It shows the frame made of strips of fir wood. The marine grade plywood skin for [...]