4 10" audiobahns 300 rms in 2 bandpass boxes from audiobahn a hifonics 1600 rms amplifier and 2 gauge wires for power acuostik it will all cost 473$ shipped is there anything that will get louder than this i dont care to much about sq if i got 12" instead it would cost almost 700$ so i decided to get the 10"s
Audiobahns in general sound awful and have a high failure rate. The use of a bandpass box will make them sound even worse, even though they are 10's. The hifonics amp prob only puts out between 1200-1300 rms, and is a good budget amp. Power acoustik is krap as well, but its just wiring so i guess your ok there. You will also need a new alternator for your car with that much wattage or you just asking for trouble.
If all you want it loud, audiobahn is an option and will prob fall apart in the process, however, for 473 you could get better quality equipment. If i were you i would look in to a high quality SINGLE SUB SETUP with that hifonics you have alot of options. I would recommend an SX from Resonant Engineering if you can still get one from RE. They are one of the loudest subs you can get and will sound much better then the audiobahns. With only 300 watts per sub they can really get all that loud.
"is there anything that will get louder than this i dont care to much about sq "
Yes, a lot of setups. But for that price range, probably not. But I'll bet it won't last very long. And RE is a good way to go, but of course I'm an Eclipse lover...