JL Audio's TR350-CXi 3-1/2" speakers use mica-filled long-excursion polypropylene woofers for enhanced upper-bass response that'll really fill out your drums and guitars. The 1/2" woven textile dome tweeters broadcast all the little details that bring your music to life. Ferrofluid cooled tweeters and butyl rubber surrounds mean that these speakers will bring you great music for many years to come. Details: 2-way 3-1/2" speakers (pair) injection-molded mica-filled polypropylene woofer polyether foam surround 1/2" textile dome tweeter 4-ohm impedance 2-25 watts RMS power range frequency response: 130-22,000 Hz sensitivity: 83 dB depth: 1-9/16" warranty: 1 year