Best Buy: Pioneer 10" Single-Voice-Coil Subwoofer with IMPP Cone TS-W28C
Pioneer TS-300D4 Champion Series 12" Dual 4 Ohm Car Audio Subwoofer 1400W Max - Walmart.com
TS-A30S4 - 12" - 1400w Max Power, Single 4 Ohms Voice Coil, IMPP Cone - Subwoofer | Pioneer Electronics USA
Pioneer GXT-3730B Car subwoofer enclosure 30 cm 1400 W 4 Ω | Conrad.com
Authorized on line Klipsch Dealer. Klipsch Reference Premier In Stock Now! Home Theater Systems, In Wall Speakers & more. Call 1-800-691-6914.
Pioneer Pro Series 12" 1,500-watt Subwoofer in the Mobile Audio department at Lowes.com
Amazon.com: Alphasonik NSW412 Neuron 400 Series 12” 1500 Watts Max / 500 Watts RMS Dual 4 Ohm Car Subwoofer w/ High Grade Magnet Non Pressed Paper Carbon Stitched Cone Cooling Rings System
Pioneer 12" 1400 W Max Power, Single 4-ohm Voice Coil, IMPP™ cone, Rubber Surround Component Subwoofer BLUE TS-A123R - Best Buy
Pioneer 400 Watt Subwoofer, 10" - Walmart.com
Best Buy: Pioneer Champion Series 12" Single-Voice-Coil 4-Ohm Subwoofer Black TSW310S4
TS-W311S4 - 12" Champion Series Subwoofer with Single 4 Ohm Voice Coil | Pioneer Electronics USA