Mythbusters: Homemade Hi-Def Speakers

dgandhisays...

$10 plug? IIRC this show is shot near SF, which means he could have headed over to 16th/Mission (it's even got a BART station) and picked up stereo-miniplug jumpers (two plugs) for $1 at no fewer than 2 dollar stores that sit at that intersection. So I've got problems with their information to start.

Secondly, this myth is bustable on paper. A cone speaker requires, at minimum, three things: coil, cone, magnet. If we assume that the penny is somehow functioning as a coil (major stretch) and that the foil is acting as a cone (it lacks sufficient rigidity), we still need something for the coil to resist against, and their is nothing else magnetically reactive in the "speaker".

If this was an attempt to "prove" that it didn't work, then they need to pull out an amp (that they don't mind destroying) and run some juice through it, battery powered CD player, not even a real test.

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