Okay I have a few questions. I plan on getting two 12" Alpine type R's, but should i get the old model of 500 watts RMS each or the new model of 300-600 watts RMS each? Second should I get dual 2 ohms or dual 4 ohms? I dont really understanding wiring and electronics very well. Third, I plan on getting one amp that will power both. I have been told to get a mono channel class D amp but im not sure what to get. Any suggestions would be helpful, thanks Links: http://www.techronics.com/caraudio_2194_Alpine-SWR-1222D-12-inch-Dual-2-ohms-Typ e-R-1500-Watts-Car-Subwoofer-SWR1222D-.html http://www.techronics.com/caraudio_10976_Alpine-SWR-1223D-12-inch-1800-watts-Max -Dual-2-ohm-Type-R-Subwoofer-SWR1223D-.html http://www.techronics.com/caraudio_2167_Alpine-SWR-1242D-12-inch-Dual-4-ohm-Type -R-1500-Watts-Car-Subwoofer-SWR1242D-.html http://www.techronics.com/caraudio_10973_Alpine-SWR-1243D-12-inch-1800-watts-Max -Dual-4-ohm-Type-R-Subwoofer-SWR1243D-.html thanks