Upgrade options for the spare tire subwoofer module - Page 2 - AudiWorld Forums
Audi Sound System what are my upgrade options? - Page 7 - AudiWorld Forums
300 Watt Rms E 600 Watt Max Subwoofer Woofer Pyle PLPW6D 6.5 of 16,50 cm 165 mm 4 + 4 Ohm DVC Double Coil for Doors Portier Car or in Box Speaker: Amazon.de: Electronics & Photo