Pyle Power Series Dual-Voice-Coil 4-OHM Subwoofer (10", 1,000 Watts) in the Mobile Audio department at Lowes.com
Amazon.com: Pyle 10" Car Audio Speaker Subwoofer - 1000 Watt High Power Bass Surround Sound Stereo Subwoofer Speaker System - Non Press Paper Cone, 90 dB, 4 Ohm, 50 oz Magnet, 2
Dual Electronics DWS12 12-inch High Performance Subwoofer with a 2-inch Single Voice Coil and 1,000 Watts of Peak Power - Walmart.com
BOSS Audio Systems D12F Phantom Series 12 Inch Car Audio Subwoofer - 1000 Watts Max, Single 4 Ohm Voice Coil, Sold Individually, Low Profile, For Truck Boxes and Enclosures, Hook Up To Amplifier