power problem

i do installs for a small shop in indy and for our shop power we have a normal car battery, a 1.5 farad cap,and a 10 amp battery charger. when i hook up a amp and subs to it                    the sound is terrible. if I turn up the radio the subs sound like they are not getting the power they need. if i get a power supply what should i look for as far as power ratings1988 suburban on 20 inch Daytons

So you're saying that the soundd is crappy because you don't have enough power?~The Rookie~

Rookie of the year that is...

Don't let the smoke out of your equiptment..it doesn't go back in.

yes very crappy. sounds like its in a tin can or kind of hollow 1988 suburban on 20 inch Daytons