I just want to know what power amp i would need 2 get these things going good. I really do not know alot about car stereo systems but i would hat to buy an amp that does not have enough power. These are the specs for an individual 15" Kicker CVR15 Subwoofer
* Impedance - Dual 4 ohms
* Cone Material - Poly mineral
* Surround Material -Santoprene rubber
* Sealed Box Volume -1 - 4.6
* Ported Box inner volume -1.75 - 2.20
* Dual Voice Coil - Yes 4 ohms each
* Sensitivity - 89.1dB
* Frequency Response - 25 - 0.5k Hz
* RMS Power Range - 50-500
* Peak Power Handling - 1000
* Mount Depth - 8 1/8
* Impedance - Dual 4 ohms
* Cone Material - Poly mineral
* Surround Material -Santoprene rubber
* Sealed Box Volume -1 - 4.6
* Ported Box inner volume -1.75 - 2.20
* Dual Voice Coil - Yes 4 ohms each
* Sensitivity - 89.1dB
* Frequency Response - 25 - 0.5k Hz
* RMS Power Range - 50-500
* Peak Power Handling - 1000
* Mount Depth - 8 1/8