Pyle PLQB10 500W Car Audio Speaker Subwoofer Bandpass Enclosure System (2 Pack) - Walmart.com
MR DJ PA118 Raw PRO Subwoofer700W 18" Raw replacement PRO PA DJ Speake – Mr Dj USA
Sony HT-A9/SA-SW5 Home Theater Bundle Home theater speaker/subwoofer system Dolby Atmos®, DTS:X, Bluetooth®, Apple Airplay® 2, and Chromecast built-in at Crutchfield
Amazon.com: 2Pcs 4 Inch Subwoofer Speaker 8Ohm 30W Woofers for Speakers Bass Anti Magnetic Bass HiFi Loudspeaker Car Audio Home Theater DIY (Color : 2pcs) : Electronics