Your arguments concerning SPL aren't hated or disputed...but they don't seem to relate to the ops request. If he has to post this thread without knowledge of batteries within the realm of SPL, on a pontiac forum on top of that, is he really looking to squeeze out every last decibel? Power isn't even a concern in SPL until you've gone through hell with models, measurements, build, and finally install.
My first thought; this kid wants a reliable daily driver. Gains should be modest due to playback quality and again...all the added adjectives and experience of some trying to push their own agenda have no place until th op says otherwise.
My original argument is that we have a seasoned spl competitor[casper] who has demonstrated time and time again that extra crazy batteries are unnecessary and running off the alt. is fine so long as you're properly grounded. Since the op is obviously well below those applications there's no need to recommend expenditures that won't compliment his goals.
