Amazon.com: Denon Home Subwoofer with HEOS Built-In, Deep, Powerful Bass, 8" Bass-Reflex Woofer, Pair with Denon Home Sound Bar 550, and Denon Home 150/250/350 Speakers or HEOS Speakers, Easy Installation : Electronics
Amazon.com: BOSS Audio Systems CXX8 8 Inch Car Subwoofer - 600 Watts Maximum Power, Single 4 Ohm Voice Coil, Easy Mounting, Sold Individually : Electronics
Amazon.com: REL Acoustics T/7x Subwoofer, 8 inch Front-Firing Driver, Arrow™ Wireless Port, High Gloss Black : Electronics
Amazon.com: BESTISAN 100-Watt Powered Subwoofer - 8 Inch Speaker, Massive Output, Low Distortion, for Studio and Home Theater Systems SW80 : Electronics
Amazon.com: 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 (1 pack) : Electronics
Amazon.com: Skar Audio IX-8 D4 8" 300 Watt Max Power Dual 4 Ohm Car Subwoofer : Electronics
Amazon.com: Facmogu 2PCS 8 Inch Full Range Audio Speakers, RMS 50W Peak 120W 4 Ohm, Car Vehicle Audio Full Range Drivers, Wide Range Bass Woofer DIY Loudspeaker Replacement - Yellow : Electronics
Amazon.com: Skar Audio VD-8 D2 8" 600W Max Power Dual 2 Ohm Shallow Mount Car Subwoofer : Electronics
Amazon.com: MB Quart DS1-204 Discus Shallow Mount Subwoofer (Black) – 8 Inch Subwoofer, 400 Watt, Car Audio, 2 Inch Voice Coils, UV Rubber Surround, Best in Sealed Enclosures : Electronics