so, i'm pretty bored and decided that i want to make a speaker. i've bought some thick copper wire, and twisted it in the form of a coil, then twisted some more with a larger radius so i can put the first one inside the second one and so on.. my motivation to buy the thick wire was to maximize the magnetic field produced, and that would need a lot of current, i.e. less resistance. my question is this. how can i maximize the current through the coil without provoking a short circuit? i'm not sure on the reasons why a short circuit is produced, i just now that with very little resistance, you get one.. though, i dunno what it is that fails. any thoughts?