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Amazon.com: Pyle PLPW6D 6 Inch 600 Watt Max Dual Voice Coil 4-Ohm Stereo Subwoofer Speaker for Car, Boat, and RV Audio Applications, (12 Pack) : Electronics
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Amazon.com: Harmony Audio HA-ML182 Monolith 18" Car Stereo Competition SPL Sub 3500W Dual 2 Ohm Subwoofer : Electronics
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Amazon.com: 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 -
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Amazon.com: Orion XTR152D 15" Subwoofer 2 OHMS 3000 Watts Max Music Power Dual Voice Coil Car Audio Car Stereo Woofer : Electronics
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Amazon.com: Pyle 12" 6400W 4-Ohm DVC Car Stereo Power Audio Subwoofer Set, 4pk | PLPW12D : Electronics
