Tom Hobson posted an enticing Instructables HOWTO on building a stereo tube amplifier. I haven't built the project, but I love the bonus video he linked to, a 1942 RCA promo for vacuum tubes titled "Electrons on Parade." From Tom's Instructable intro:
Ever wanted to build a highly dangerous, inefficient, and essentially obsolete piece of electronics? Well, I have. That's pretty much what a tube amp is. Vacuum tubes are old electronic components that act like transistors, controlling a lot of current with a little current. You usually hear about tubes being used in guitar amplifiers, because they distort in a way that suits guitar playing. However, tubes can also be used to amplify a stereo signal from another audio source such as a CD or MP3 player. Tube amps, unfortunately, aren't the most practical things in the world; they consume a great deal of power, get very hot, and are big. That being said, they look damn cool, and some people seem to think they sound pretty nice too.
You can learn a lot about electricity and electronics from a project such as this.
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Did you buy a useless $400 “smart” juicer and now feel the need to accessorize it with more extrusions from the Internet of Shit timeline? Then The Leaf from Teaforia is just the thing: it’s a tea-maker that uses DRM-locked tea-pods to brew tea in your kitchen so you don’t have to endure the hassle […]
If you struggle to get a good night’s rest, consider replacing your pillows before dropping hundreds on a new mattress. You can give your tired neck a break with a 2-pack of memory foam pillows, available now in the Boing Boing Store.Each of these pillows is stuffed with cooling polyurethane foam that molds to your […]
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