Monoprice 5.25-Inch Kevlar 2-Way In-Ceiling Speakers (109336) Kevlar cones are light weight yet extremely rigid providing very precise audio with minimal distortion normally caused by cone flex Our Kevlar speakers are matched with an equally precise silk membrane dome tweeter made of titanium fiber thread and a high quality crossover network to ensure high fidelity and low distortion The lower distortion levels allow the speaker to be driven harder and handle higher peak power levels