The Pyle PL6984BL is a pair of 6" x 9" four-way 400 W speakers that carry high, mid and low end for a fuller range sound. The non-fatiguing butyl rubber surround keeps your speakers secure as well as extending the life of the product. A 1.25" high-temperature ASV voice coil provides the richest sound, ensuring low distortion and providing an open sound stage. The blue poly injection cone looks great and allows your music to resonate with full power. The 50 oz. magnet structure, 1" neodymium film dome midrange, 1" film dome tweeter and 3/4" piezo tweeter are what power these speakers and allow for a 50 Hz - 20 kHz frequency response.