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Amazon.com: DS18 SLC-8S Subwoofer in Black - 8-Inch Speaker, 400W Max Power, 200W RMS Power, Aluminum 4 Layer Voice Coil, Black Steel Frame, SVC, 4 Ohm Impedance, Ferrite Magnet (1 Speaker) (SLC8S) : Electronics
Amazon.com: PyleUsa Car Midbass Speaker System - Pro 8 Inch 400 Watt 4 Ohm Auto Mid-Bass Component Poly Woofer Audio Sound Speakers for Car Stereo w/ 40 Oz Magnet, 50Hz-5KHz Frequency, 3.58”
Planet Audio New Pair Px10 10" 800W Car Audio Subwoofers 4 Ohm 400W RMS Sub : Electronics - Amazon.com
Amazon.com: Polk Audio HTS 12 Powered Subwoofer with Power Port Technology | 12” Woofer, up to 400W Amp | For the Ultimate Home Theater Experience | Modern Sub that Fits in any
Amazon.com: Pyle 400W Portable Bluetooth PA Loudspeaker - 8” Subwoofer System, 4 Ohm/55-20kHz, USB/MP3/FM Radio/ ¼ Mic Inputs, Multi-Color LED Lights, Built-in Rechargeable Battery w/ Remote Control -PPHP844B : Musical Instruments
Amazon.com: pkg SOLID1 - Focal Monoblock 470 W RMS Power Amplifier + Pair of SUB P25 - Focal 10" 200W RMS 400W Max Single 4-Ohm Subwoofer : Electronics
Amazon.com: DS18 GEN-X104D Subwoofer in Black - 4 Layer Black Aluminum Voice Coil, 10", 800W Max Power, 400W RMS, Dual 4 Ohms, DVC - Powerful Car Audio Bass Speaker (1 Speaker) : Electronics