Any thoughts on which combination will give the most output? How about the best sound? This is in a HT system only, run off a LFE output from the HT prepro, in a room approx. 13' x 15'.
Go with a single DD12. That is more than enough for your room. If you still feel like that's not enough, go for the DD15, that's a fantastic subwoofer. I personally don't believe having two subwoofers is a good idea both acoustically and financially.
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