ok i need to act fast as this is only for this week... but i want subs...
what is better?

Save 20% on 1 Car Amp, 2 Subs & 1 Sub Box
For a limited time, save 20% when you create your own car audio package including 1 Car Amp, 2 Subwoofers and 1 Sub Box. See your local Best Buy store for details. Offer available in-store only. (whats a good combo)

or

Save $130-$160 on a Sony Car Audio Package
Right now, save $130 on a Sony 10" Car Audio Package. Or save $160 on a Sony 12" Car Audio Package. Each package includes: · 1200W Sony Car MOSFET Amp · 2 Sony Subs · Q-Logic Dual-Chamber Sub Box.

thanks

Save $130-$160 on a Sony Car Audio Package
Right now, save $130 on a Sony 10" Car Audio Package. Or save $160 on a Sony 12" Car Audio Package. Each package includes: · 1200W Sony Car MOSFET Amp · 2 Sony Subs · Q-Logic Dual-Chamber Sub Box

That 1200 Sony amp is a good amp.. and would defiantly what I would buy from best buy anyways.

No offense, but I wouldn't buy Sony subs if it was all I could afford.

Sony amps are ok, but if you have to buy from BB, RF would be a better choice. Again not my first, but it is at BB.

I agree with BonneMeMN.. sony amp is ok.. but stay away from the subs.. they're useless.. they're IMO as crappy as the subs you can buy @ Radio Shack ( that they use to carry on their own )

10 inch rockfords punches good?

yep.. but if you can afford it.. JL Audio..

ok how much prcier are JL over RF?
i wanted these subs ( Rockford - Punch 12" Single-Voice-Coil 8-Ohms Subwoofer P112S should i get 8 ohms or 4?
a box 30 inches wide... will this fit?

and what amp is better? (if it helps i have a pioneer DEH-P6600 deck)

Kenwood 1000-Watt Bridgeable Mono Amplifier with Low-Pass Crossover and Bass Boost
Model: KAC-8101D

Rockford Fosgate Punch 900W Mono MOSFET Amplifier with Selectable Bass Boost
Model: P3001

ALSO can someone explain capacitators to me? thanks for your help...

If I were you go ahead with the sony amp and then pick up eaither a set of 10" or 12" JL W0'*. Much better then sony a cleaner sub and not a lot more.

JL will cost more, even w0'*. I'm glad i got mine used. JL is generally not online either.

No matter what you get, get a 4ohm.

Look for the RMS of the amps.. thats what you should look for peak watts are garbage.