Electronic-Star Cornwall Car Stereos Imposing 0.1 Komplett-Set with 25 cm Subwoofer Bass Box with Twin Stage in 2000 W : Amazon.co.uk: Electronics & Photo
EMPHASER ESW-M10: Bass Speaker 25 cm with 200 Watt RMS, Powerful 10 Inch Subwoofer for Cars, Trucks and Motorhomes : Amazon.de: Electronics & Photo