[MaxWeiss]

Okay, so here's how a speaker works.

You put a coil of wire, generally copper I think but I may be wrong about that, around a magnet. Now from basic high school science you should know that if you wrap that wire around a piece of metal and run current through it, you get a magnetic field. If you don't know that, then just trust me.

But since you wrapped it around a magnet, when you send current, the magnet either moves up or down, to get away from or closer to the coil-created magnet, depending on the polarity of the coil-created magnet based on the direction or current.

This push/pull on the solid regular magnet caused by the current flow from the coil (the other end of which is your headphone jack) moves the magnet and also the whole speaker cone, which is attached to the magnet.

That creates sound waves in the air.

No magnet and no coil equals clear sham.

Also ripping apart standard three prong AV cables and shoving a battery in them does not power a TV in case you were wondering.