The Pyle 6'' x 9'' Four-Way Car Speakers deliver 400 watts of powerful sound with a blue poly injection cone and non-fatiguing butyl rubber surround. Designed for a fuller range sound, these speakers feature a 1.25'' high-temperature Asv voice coil for reduced distortion, a 1.5'' film dome midrange, a 1'' film dome tweeter, and a 0.75'' piezo tweeter. The 50 oz. magnet structure allows for a frequency response of 50 Hz to 20 kHz, producing clear highs, rich mids, and deep lows. These speakers are a great replacement for factory speakers and provide an immediate upgrade in sound quality.