The other contributing factor is 12v automotive electrics. If you only have 12 v to work with, you've got to run a LOT of current to make even 120 watts. 10 amps at 12 v (120W) is a LOT of current to run through a voice coil. Car audio will be a lot better when the new 48v automotive standards take effect (should be 2007?). You won't need nearly as much current for high power, and the wiring harnesses in cars will get a lot smaller and lighter with the generally reduced current requirements that come with a higher system voltage.[/b]
