Description: Sony's muscled up the 2-way XS-W1321 5-1/4" speakers to produce big, full-range sound with excellent power handling. The ultra-rigid Highly Oriented Polyolefine (H.O.P.) woofer cones are 30 times stronger than polypropylene, so lows hit with a satisfying thump. Efficient paper cone tweeters broadcast accurate high frequencies. Grilles included.