Alternator? Battery? Dual Battery?

[SubmerseMusic 10+ year member]

Okay, I have been to auto shops, car audio specialists, blogs, google, and I am still confused on this situation. Tomorrow I am adding 2,000 more watts to my car sound system and I am fairly sure that I am going to need to upgrade the power. I have 1/0 gauge running to my amps already, I have done the Big 3, so do I still need a battery or new alternator? I drive a 2004 Chrysler Sebring LX 2.7L v6 Sedan.

If I go with a battery, should I get a new one, or another one? I was thinking about getting a Stinger battery but I don't want to spend $400 for one lol. Than I was going to get an Optima Yellowtop to run as a dual battery dedicated to my sound system, but would my alternator strain from two batteries? I'm confused. PLEASE HELP //content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif

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[SubmerseMusic 10+ year member]

Well... I bought the Optima Yellowtop D31A. As a dual.

 

[dustyshot 10+ year member]

I got a regular battery under hood, and a hc1400r in trunk. I just hooked it up yesterday that way. I used to have just the hc1400r in front. It worked fine and hit hard, but now with the two batteries in it seems the car is running a little better and the bass hit little more than before. It hits really good right now.