Amazon.com: Gravity 2X 10 Inch 1500 Watt Car Audio Subwoofer w/ 4 Ohm DVC 10 in. Sub - Pair - Feature Dual Voice Coil, Thick Magnet, Design for Car, ATV, Van, High Performance Car Show : Electronics
Amazon.com: Rockville (2) W15K9D4 15" 10,000w Car Subwoofers Dual 4-Ohm Subs CEA Compliant : Electronics
Amazon.com: DD Audio 608F-D4 8" Dual 4-Ohm 3000W Subwoofer : Electronics
Amazon.com: MTX TN10-04 10-Inch Single 4-OHM Subwoofer 150-Watt RMS Black : Electronics
Amazon.com: KICKER CompRT 6.75"(165mm) Subwoofer, DVC, 4-ohm, RoHS Compliant : Electronics
Amazon.com: MTX 12" Shallow 300 Watts RMS 4 Ohm Subwoofer 3512-04S (35 Series) 3.375" Mounting Depth : Electronics
Amazon.com: H YANKA 12 Inch Subwoofer - 12 Inch Paper Cone Subwoofer Car Audio, Black Steel Basket, Dual Voice Coil 4 Ohm Impedance 12 subwoofer, 1600W MAX Power 12 inch Competition Subwoofer : Electronics
Amazon.com: Healifty Full Range Speaker 4 Ohm 5w Mini DIY Audio Subwoofer Loudspeaker Computer Speakers Home Car Audio Speakers : Electronics
Amazon.com: 2 Pack XR Series 15" Subwoofer 3000 Watts Max DVC 4 Ohm American Bass XR-15D4 : Electronics
Amazon.com: Audiopipe TXX-BDC4-8 8 Inch 1000 Watt High Performance Powerful 4 Ohm DVC Vehicle Car Sub Audio Subwoofer Speaker System, Black : Electronics
Amazon.com: H YANKA 12 Inch Subwoofer - 12 Inch Paper Cone Subwoofer Car Audio, Black Aluminum Basket, Dual Voice Coil 4 Ohm Impedance 12 subwoofer, 1600W MAX Power 12 inch Competition Subwoofer : Electronics
Amazon.com: wet sounds REVO 12 FA S4-B Black Free Air 12 Inch 4 Ohm Subwoofer, No Grille : Electronics
Amazon.com: Alpine W12S4 12-inch Single 4 Ohm Subwoofer Bundle : Electronics
Amazon.com: GRS 10SW-4 10" Poly Cone Subwoofer 4 Ohm : 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
Amazon.com: Focal Sub P20FSE 8" Expert Flax Shallow-Mount 4-Ohm Subwoofer : Electronics
Amazon.com: JBL Club WS1200 - 12” Shallow mount subwoofer w/SSI™ (Selectable Smart Impedance) switch from 2 to 4 ohm : Electronics
Amazon.com: Pyle Car Subwoofer Audio Speaker - 8in Non-Pressed Paper Cone, Black Plastic Basket, Dual Voice Coil 4 Ohm Impedance, 800 Watt Power and Foam Surround for Vehicle Stereo Sound System -
Amazon.com: Focal SUB 10 Dual 10" Subwoofer, Dual 4-Ohm Voice Coil, 250W RMS - 500 W MAX : Electronics
Amazon.com: Pyle 8 Inch 1600 Watt DVC 4 Ohm Car Audio Subwoofer Speaker Set with 40 Oz Magnet and 1.5 Inch 4 Layer Voice Coil, Black (2 Pack) : Electronics
Amazon.com: Harmony Audio HA-R124 Car Stereo Rhythm Series 12" Sub 600W Single 4 Ohm Subwoofer : Electronics
Amazon.com: 25W Woofer 4 Ohm Subwoofer Speaker, Bass Audio Column Loudspeaker For Home Theater : Electronics
Amazon.com: Skar Audio VD-12 D4 12" 800W Max Power Dual 4 Ohm Shallow Mount Car Subwoofer : Electronics
Amazon.com: Sundown Audio E-15 v4 D4 15 500W RMS Dual 4-Ohm Subwoofer ,(E-15v4D4) : Electronics
Amazon.com: PSW10A-D4 - DD Audio 10" 1800W Dual 4-Ohm Subwoofer : Electronics
Amazon.com: Hifonics HFX12D4-PAIR 400-Watt 12-Inch HF Series Dual 4-OHM Subwoofer, Set of 2 : Electronics
