Ten Reasons You Need A Polk DSWPRO550WI Subwoofer, Reason #5: Because it's the easiest way to add thrilling new dimensions to your entertainment experience. Whether you enjoy musicany kind, gaming, or movies on DVD or Blu-Ray, without a subwoofer to add the deep bass effects, you're missing an integral (and fun) part of your media. Music comes alive with depth and expansive realism when you have well-blended bass in the mix. Gaming moves take on a new significance when you can feel every footstep and every deep bass effect. Movies leap off your screen and fill your room with lifelike effects and big emotional impact when you experience the low-frequency effects of car chases, explosions, arguments, and plot devices. And all you did was plug in a Polk subwoofer! That's a big improvement.