SVS SB-1000 Pro 12" Sealed Subwoofer with Bluetooth App Control (Open Box) | electronicsexpo.com
200w 12-inch Active Subwoofer Speaker Home High-power Home Theater Hifi Fever Audio Super Subwoofer High Fidelity Audio Box - Speakers - AliExpress
KLH Stratton 500 Watt 12 inch Subwoofer | KLH Subwoofers
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