We don't need a play-by-play of the votes //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif.
Why don't you go with something that sets the other one apart from the other...
Like, THREE 12 SoloX's or ONE 18 SoloX...
Then get a pair of strappable amps, like some IA20.1's, run them at like 1ohm strapped (.5ohms each) you'll get around out of the pair... sweet for like 2000rms to each subwoofer.
Or not. But it'd be the shit. I just think the single SoloX 18 is played out...
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nG