I think you'll be much happier with multiple amps. Sounds like your going to want at least 1000 watts, if not more, to your 4 12's. Not going to get that out of too many multichannels out there.

You might be surprised how well your mids and highs can keep up. My installer has 3 12's on 1600 watts RMS in his acura, backed up by 4 6 1/2's on a 4x50 running 4 ohms on all channels (he didn't buy my 'no rear fade or rear speakers argument, either ). He hits 144 ish on my Termpro, and hit 152 on a 3055 once, but you can sing along a block away. I've got another customer with 4 12's on 4000 watts, backed up by 2 6 1/2's and 2 5 1/4's on about 300 watts. Doesn't have much midbass, but song lyrics are very clear, even at 149db.

What are you going to do for power? Lots of people skip the battery / alternator steps, and wonder why their systems don't work out well.

Toby

 

I Am Firm Beliver In More Is Better,
When It Comes To Power How About A 250 Amp Alt - And 3 Optima Batteries,
You Asked What Type Of Car - My Chevelle -

 

JL underrates their amps also. Ive seen a 500/1 put out alomst 700watts of power. What subs are you doing? You can do the 300/4 and a 500/1 or 1000/1 depending on the subs power handling.

 

why so many batteries?

 

+1. I've never seen the point in running multiple batteries unless you're pushing 2500+ watts or want to just sit around bumping with your car off all day. The majority of the people I see with multiple batteries are usually also the ones who think a bunch of cheap subs are the way to go (refer to the other thread )

 

One Battery For Auto -
2 Batteries For System,
Use A Smart Isolator To Charge The Lowest Battery Or Can Switch It To Connect All Or A Combination (something I Got From The Marine Industry)
Plus The Layout I Have Figured In The Trunk Will Look Better With 3 - For Now, Plans Do Change.

 

for a 2000wrms system its overkill but I can see the looks aspect. Me myself have never been able to get 'looks' on my audio system, it contradicts sq unless you spend much more time than I have available on fabrication. The outside is a different story... I did remove the color changing LEDS though.