I've heard the MAXX2 extensively, and I can't imagine needing a subwoofer with those speakers for music or movies.
For home theater use, where you have a dedicated subwoofer channel (e.g. 5.1), a sub might be called for, though I think it would take quite a sub to mesh well with MAXX2s. In that case I like the JL Audio F212. I talked a friend into one, and the F212 can produce enough clean output with a 20hz test signal to make you truly nauseous. The F212 is a monster.
But if I owned the MAXX2s a sub would be the last thing on my mind.
For home theater use, where you have a dedicated subwoofer channel (e.g. 5.1), a sub might be called for, though I think it would take quite a sub to mesh well with MAXX2s. In that case I like the JL Audio F212. I talked a friend into one, and the F212 can produce enough clean output with a 20hz test signal to make you truly nauseous. The F212 is a monster.
But if I owned the MAXX2s a sub would be the last thing on my mind.