In need of MAJOR advice for my system.

[Lkorecky11]

So as of now I have an 01 Nissan Frontier XE and ive put in two jl wov3 subs. They are currently running off of the stock alternator and a Rockford Fosgate R1200-1D monoblock.

I wanna add two more 12s but I don't know what amp I should get. I know I should probably upgrade the alternator but the highest one I've found is 120 w. A while back I did

upgrade the door speakers with jl C1-650 running to aftermarket radio. 

[Wishuponasub]

As far as alternators go you can check with singer, mechman, dc power.  On the amplifier part you could just grab another Rockford 1200 if you wanted to, or are you just wanting 1 amp for the 4 12s?

[06RTCharger]

Should get an amp for those components. Deck power is pretty weak, usually only gives under 20w. Those speakers rms is 75, peak says 225 or something. 

[YukonXL04]

That Rockford 1200 should push 4 w0's. And you shouldn't need a HO alt for 1200w

[Lkorecky11]

16 hours ago, Wishuponasub said:

As far as alternators go you can check with singer, mechman, dc power.  On the amplifier part you could just grab another Rockford 1200 if you wanted to, or are you just wanting 1 amp for the 4 12s?

I could get another 1200 but what would be the better option? Plus as 06RTCharger said should i get a separate amp for those? Or what would be ideal

[06RTCharger]

I was referring to the components (mids&highs). You should definatly get those onto an actual amp, rather than the really weak deck power. Youre about to have four 12s for ur sub stage with ur front stage only running off the deck? Gotta balance it out a lil bit lol. Amplify ur front stage and get ur moneys worth out of those JL components.

[Lkorecky11]

1 hour ago, 06RTCharger said:

I was referring to the components (mids&highs). You should definatly get those onto an actual amp, rather than the really weak deck power. Youre about to have four 12s for ur sub stage with ur front stage only running off the deck? Gotta balance it out a lil bit lol. Amplify ur front stage and get ur moneys worth out of those JL components.

I get that much but i just dont know what amp to get. I mean i have the 1200 mono which i could very well get another for the other 12s but what about the ones youre referring to?

[06RTCharger]

If u wanna keep it all RF then get the R150x2, or u could even run ur tweeters and mid on its own channel with the R300x4. With the two channel you'll need to use the passive crossover when wiring it all up. With the four channel you can wire each speaker to its own channel and be able to tweek it around as u want.