Bass upgrade for motorhomes, camping and commercial vehicles: The plug & play active subwoofer UG FIAT SUB6A is compatible with the Fiat Ducato III (Series 7 + 8), Peugeot Boxer II, Citroen Jumper II, Dodge Ram ProMaster and Iveco Daily (VI+ VII). The active bass box is easy to mount and Compare prices from: Eton in Speakers & Subwoofers