8” Slim Marine Subwoofer - 300W 4 Ohm Waterproof Car Component Speaker System, Low Profile PP Cone w/Rubber Edge, 30 Oz Magnet 1.5" Voice Coil, for Custom Audio Boat Truck Mobile Vehicle (Black)

PIONEER 12" Single Voice Coil Component Subwoofer - TS-A300S4

Earthquake Sound TNT-10DVC 10-inch Subwoofer with Dual 4-ohm Voice Coil

Pyle Car Vehicle Subwoofer Audio Speaker - 10 Inch Blue Injection Molded Cone, Blue Chrome-Plated Steel Basket, Dual Voice Coil 4 Ohm Impedance, 1000W Power, for Vehicle Stereo Sound System - PL1090BL

Lanzar 8 inch Car Subwoofer Speaker - Black Non-Pressed Paper Cone, Aluminum Voice Coil, 4 Ohm Impedance, 800 Watt Power and Foam Edge Suspension for Vehicle Audio Stereo Sound System - MAXP84

Car Vehicle Subwoofer Audio Speaker - 8 Inch Blue Injection Molded Cone, Blue Chrome-Plated Steel Basket, Dual Voice Coil 4 Ohm Impedance, 600 Watt Power, for Vehicle Stereo Sound System - Pyle PLBW84

5” x 7” Car Sound Speaker (Pair) - Upgraded Blue Poly Injection Cone 3-Way 300 Watts w/Non-fatiguing Butyl Rubber Surround 80-20Khz Frequency Response 4 Ohm & 1" ASV Voice Coil - Pyle PL573BL

6” x 8” Car Sound Speaker (Pair) - Upgraded Blue Poly Injection Cone 3-Way 360 Watts w/Non-fatiguing Butyl Rubber Surround 70-20Khz Frequency Response 4 Ohm & 1" ASV Voice Coil - Pyle PL683BL

(Black) - 10cm Dual Marine Speakers - Waterproof and Weather Resistant Outdoor Audio Stereo Sound System with Polypropylene Cone, Cloth Surround and Low Profile Design - 1 Pair - PLMR41W (Black)

LANZAR 8in Car Subwoofer Speaker - Black Non-Pressed Paper Cone, Stamped Steel Basket, 4 Ohm Impedance, 600 Watt Power and Rubber Suspension for Vehicle Audio Stereo Sound System - MAX8, One Size