Amazon.com: Ground Zero Iridium 16,5 cm / 6.5" Subwoofer - 4 Ohm - 100 WRMS : Electronics
Amazon.com: BOSS Audio Systems CUBE8 Car Subwoofer and Amp Package – Built-in Amplifier, 8 Inch Subwoofer with Passive Radiator, Remote Subwoofer Control : Electronics
AXTON ATW16: 16 cm Subwoofer, Basstreiber für Autos, 2 x 2 Ohm, 75 W RMS : Amazon.de: Elektronik & Foto
Amazon.com: 10 Inch Under Seat Woofer Black Slim Under Seat Car Active Sub Woofer Bass Aluminium Alloy Speaker 12V 600W : Electronics
Amazon.com: Rockville RockGhost Active Powered 8" Hidden Car Subwoofer Sub For 15"/16"/17" Full Size Spare Tire : Electronics
Ground Zero GZTF 16 | 16 cm coaxial speaker : Amazon.de: Electronics & Photo
Sony XS-FB1620E 16cm (6.5”) 2-Way Coaxial Speakers, black : Amazon.co.uk: Electronics & Photo
Amazon.co.jp: Component Subwoofers - Car Audio: Automotive: コンポーネント, エンクローズド & More
Amazon.com: Pyle 6.5 Inch Mid Bass Woofer Sound Speaker System - Pro Loud Range Audio 300 Watt Peak Power w/ 4 Ohm Impedance and 60-20KHz Frequency Response for Car Component Stereo PLG64 : Electronics