DS18 ZXI6.4D High Excursion 6.5" Car Audio Subwoofer 600W Watts DVC 4-Ohm Quad Stacked Magnets
DB Drive WDX6.5G2.4 6.5'' Subwoofer 4Ω DVC Dual Voice Coil WDX6.5G2 4Ω 6.5" Sub | eBay
Pyle Power Series Dual-voice-coil 4-ohm Subwoofer (6.5", 600-Watt) in the Mobile Audio department at Lowes.com
Memphis Car Audio - MOJO Mini 6.5" Dual-Voice-Coil 4-Ohm Subwoofer - Black - Walmart.com
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BOLD6 AMPIRE Dual Voice Coil Subwoofer 6,5"
Pyle Power Series Dual-voice-coil 4-ohm Subwoofer (6.5", 600-Watt) in the Mobile Audio department at Lowes.com
Memphis Audio MJM622 MOJO Series 6-1/2" subwoofer (Dual 2-ohm voice coils) - Breakers Stereo and Performance
What are dual voice coil subwoofers?
Epique E150HE-44 5-1/2" DVC MMAG Extended Range Subwoofer 4 Ohm per Coil
Sundown Audio SA 6.5" inch DVC Dual 2 Ohm (SA Series) Car Subwoofer 200 Watts RMS
Amazon.com: Skar Audio EVL-65 D4 6.5" 400 Watt Max Power Dual 4 Ohm Car Subwoofer : Electronics
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
Amazon.com: Gravity 2X 6.5 Inch 600 Watt Car Audio Subwoofer w/ 4 Ohm DVC 6.5" Sub Pair - Feature Dual Voice Coil, Thick Magnet, Design for Car, ATV, Van, High Performance Car Show : Electronics