Amazon.com: Yamaha Audio 10" 100W Powered Subwoofer - Black (NS-SW100BL)
Axton ATB20A, 20 cm / 8" Aktiv Subwoofer für Auto und Reisemobile, 100 W RMS @ 4 - Aktiv Subwoofer - car-media.ch GmbH
Pioneer Sealed 12 in. 1300-Watt Active Subwoofer with Built-in Amp TS-WX1210A - The Home Depot
Ibass 100w 6.5-inch Wooden Active Subwoofer Speaker Home Theater Echo Wall Bluetooth Speaker Multimedia Computer Tv Living Room - Speakers - AliExpress