Subwoofers with room correction built in?

+1 @musicaddict Though I tend to buy from miniDSP.  Also, DSP works MUCH better if you have good room management.

I am hopeful you can make most self-adjusting subs work.

The parts they seem to do well is room integration and main speaker integration.  The part that is sometimes in question is the bass ends up too dry, which can be fixed by gently boosting the lowest Hz, 16 to 25 Hz and letting it slope downwards about 1 to 2 db/octave until it reaches the main speaker crossover frequency.

Given the trouble audiophiles have in correctly integrating a room, I highly recommend this approach in general.

The one thing to keep in mind is that auto setting software is not all the same. I really like the way JL audio's built in software sets their subs, but they are super pricey. You definitely should listen before buying if you can, otherwise it's worth keeping an open mind and being prepared to tweak.

A gently descending curve from 20Hz to 80 Hz to my mind sounds much better than flat.