I once made a speaker
using a copper coil from a motor and a magnet, taped to the back of a wooden picture frame.

I noticed that it generated a lot of heat, so much so that condensation formed inside the glass of the picture. I'm sure that's contrary to physics but it did happen.

Anyway, I decided to harness this heat and wrapped a reel of fine copper wire around a thermal coffee mug and put a magnet base, intending to makea device that played music and kept your tea warm (no home would be complete without one)

I connected the copper coil to the speaker out on my amp and piped some music through it. The sound quality wasn't exactly bang and olufsen but it worked rather nicely.

For about ten seconds.

Something went pop in my amp and a puff of smoke drifted out of it.

I crack open the amp and one of the internal fuses has popped
"hmm, needs a bigger fuse" thinks I, so I rummaged around for something a bit sturdier and crammed it in.

I turned the music on and the amp lasted about 15 seconds this time.
"gosh darn it" thinks I "there goes another"
So I reached into the still open case of the amp (can you see where this is going?) Yes, ladies and gentlebens, I got my first major electric shock since I was 6 and by fuck it hurt. The fingers on my right hand didn't stop twitching for days.

I still reckon the teacup speaker is a goer though
( VampireMonkeyOnSpeed a super sexy sexual sex terrorist sex, Sat 26 Jul 2008, 0:01, Reply)