I am getting one for sure in 12". Does anyone think I have enough power for two with my RF power 501bd amp? I currently have it hooked up to a RF HE2 D4 sub wired for 8ohms and my sub gain is all the way down. I'm going for a ""SQL"" setup. If I only get one it will be a D4, and if I get two I will get D2 coils so I can run them at 2ohms. Any thoughts or suggestions? I also have a solid 14.4 V going to the amp via a 220A mechman alt. and a xs power d3400 battery with all HAT speakers in the front stage, 3 way active processed with an MS-8.