VW Transporter T5 Alpine Type R Series SWR-8D4 1000 Watts 8" Car Subwoofer Custom Bass Box KitVW Transporter T5 Alpine Type R Series SWR 8D4 1000 Watts 8" Car Subwoofer Custom Bass Box Kit Alpine is proud to announce the introduction of the new R Series Subwoofer lineup that is built off the highly esteemed Type R platform. With select key design and build improvements, the R Series Subwoofer is able to output more of that deep bass extension and control that the Type R is known for. Power Handling RMS Power Handling: 350 Watts Peak Power