6.5 in. 600-Watt Car Mid Bass MidRange Woofer Audio Speakers 8 Ohm Black 2 x PDMR6 - The Home Depot
Amazon.com: American Bass DX-10 4 Ohm, 300 Watt RMS / 600 Watt Max Power, 10 Inch Subwoofer, 90 oz Magnet, Single, Hi-Temp 4-Layer 2" Voice Coil, White Powder Coated, Non-Pressed Paper Cone : Electronics
Focal Sub 12 12" Subwoofer, Single 4-ohm, 300 W Rms - 600 W Max : Target
DS18 ZXI8.2D 8" Car Audio Subwoofer 600 Watts DVC 2-Ohm Nominal Dia
Amazon.com: Pyle Car Vehicle Subwoofer Audio Speaker - 6.5 Non-Pressed Paper Cone, Black Plastic Basket, Dual Voice Coil 4 Ohm Impedance, 600 Watt Power, Foam Surround for Vehicle Stereo Sound System -PLPW6D : Electronics
Rogue Car Audio Vandal 8 | 600 WATT 8 inch Subwoofer - D4 - Down4Sound Shop
Amazon.com: Massive Audio TKO104 TKO Series. 10 Inch, 600 Watt, 8mm Top Plate, Dual 4 Ohm Car Subwoofer. Sold Individually. : Electronics
BOSS Audio Systems BE8D Elite Series 8 Inch Car Audio Subwoofer - 600 Watts Max, Dual 4 Ohm Voice Coil, For Truck Boxes and Enclosures, Hook Up To Amplifier