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: I started with the psw105 and I'm glad I upgraded to this model just a tighter sounding sub I realize there are better subs out there maybe even close in price but with the polk promotion you really can't go wrong I may not pay full price for it but I am happy with it for what I have in it