I've looked online and only confused myself further on this subject. I recently purchased this setup:

2 Kenwood KFC-W2513PS 10" Subwoofers
Specs:

10" 4-ohm subwoofer
textured polypropylene cone with rubber surround
power range: 50-300 watts RMS
peak power handling: 1,000 watts
frequency response: 39-300 Hz

1 Kenwood KAC-7205
Specs:

2-channel car amplifier
170 watts RMS x 2 at 4 ohms (250 watts x 2 at 2 ohms)
500 watts RMS x 1 bridged output at 4 ohms (4 ohm stable in bridged mode)

I'm trying to figure out what would be the best way to wire these up. Going in a sealed box, underneath my backseat.

Any suggestions would be appreciated.

 

The more I research, the more I think this amp isn't my best option...I'm thinking this one will be better..

Kenwood Kac-8105D 1000-Watt Class D Mono Amplifier
Class D Mono Car Audio Amplifier
1000W Max Power
300 X 1 @ 4_
500 X 1 @ 2_

 

Second amp would be better. Wired in parallel.

 

Agreed.