I was looking at those but I think I would lose low end putting them in a smaller box. I'm also looking at the Flatlyne and Mach5 IXL's but there's not much info on them and sealed box sizes.the optimal size for a 15" RE SE is 2.0 cu. ft. but RE's recommended size for a compact sealed box is 1.5 cu. ft. and a 15" SE can take 750 daily. they're cheap and thye'd sound cleaner than solobarics too i think
you could add another baffle to the front and do so 12s or 10sBecause that's what my box is built for.