I have a 2006 Corolla Type S. My alternator is 70 amps. I have a Batcap 800 as kinda like a 2nd battery for my JBL GTO 1201.1 II amp that puts out 1100 watts at 2 ohms. My system dims a lil bit but not too badly at night. I had a pair of Kicker CVX 12s powered off this amp and one blew and I sold the other one. I also had a pair of Orion HP12s and one blew and I still have the other one. The reason the HP blew though was I was playing Trap or Die by Young Jeezy with my iPods Bass Booste on to make the song hit harder like an idiot lol (I know not to do that ever again). One question I have is could not my electrical system actually be damaging to sub setups? In my older car I had a solenoid and a Stinger Power 2 SP1000 battery and 2 caps and a pair of Orion P12s sealed powered off a Brutus 1500 watt amp and they got pretty loud and never had problems with that setup and my alternator was even smaller, it was 40 amps. Granted I know the Brutus doesn't put out 1500 watts lol. Should I get a bigger alternator or should I just do the big 3 and get a solenoid and Stinger SP2150 and keep the Batcap 800 as well? I can get Stinger stuff for pretty cheap. I'm going to eventually sell my amp in favor of a SAZ-1500D and also want a SAX-100.2 to power a component system.

i would get a crappy multimeter to check voltage at your battery and do the big 3, see how your doing from there...then i would go alt if you need more power.