Lowest Price for Kevlar woofers by Rival Acoustics – Rhythm Audio Design
american bass hawk 15 inch dual 4 ohm voice coil 3000 watt subwoofer speaker with 80 ounce magnet and kevlar fiber non-pressed paper cone, red - Newegg.com
FOCAL AUDIOM 15KX 15" 6-OHM 225W RMS SUBWOOFER BASS SPEAKER WITH KEVLAR CONE NEW | eBay
Monacor SPH-250KE 10" Kevlar Cone Woofer 8 Ohm
DS18 ZXI ELITE 6.5" 2-Way Coaxial Speakers with Glass Fiber Cone 240 Watts 4-Ohm car audio stereo speakers