Amazon.com: Pyle Car Vehicle Subwoofer Audio Speaker - 10 Inch Blue Injection Molded Cone, Blue Chrome-Plated Plastic Basket, Dual Voice Coil 4 Ohm Impedance, 1000W Power For Vehicle Stereo Sound System PLBW104 :
Amazon.com: Pyle Car Vehicle Subwoofer Audio Speaker - 12 Inch Blue Injection Molded Cone, Blue Chrome-Plated Steel Basket, Dual Voice Coil 4 Ohm Impedance, 1200W Power, for Vehicle Stereo Sound System- PL1290BL :