Good 500/550wi subwoofer...Better Polk Audio customer service.
18 July 2014
Summary: I originally bought a dsw pro 400 along with a pair of rtia5, a csia4 and a pair of f/xia4. The 400 develop a random/occassional thumping issue after 2+ years of ownership. The local retailer replaced the original dsw pro 400 with a floor model of the dsw pro 500 at a steep discounted price.
Summary: we have still not been able to set it up properly. while it is working, not much bass to be heard from it. something of this size i would have expected to be blasted out of the room at high volume settings. nothing of the sort so far. need to call the help/support line but have not had time to yet.
Summary: Paired with Polk's Blackstone TL350 series, this sub fills the room perfectly. The bass notes are deep but do not shake the whole house and bleed over into other rooms. Currently using it wired LFE.