Kicker CS Series 6 x 9 2-Way Car Speakers with Polypropylene

They use polypropylene cones with tough, ribbed, UV-treated surrounds for precise linear excursion and reliability. The CS 6' x 9' component speakers are built for awesome sound that plays as long as the ride takes you. CS components include Titanium tweeters and 2-way crossovers with tweeter level control let you customize your sound for the best sonic quality. These KS speakers work best with 150 watts of recommended power. 450 watts peak power.