I installed an Alpine CDA-9883 HU, with an Alpine MRP-M450 amp and Apline SWR-1042D 10" subwoofer. When listening to the radio, or iPod, the subwoofer works fine, but when listening to a CD, the subwoofer does not play at all. I did a few searches trying to find the same issue, but did not find any results.
Any suggestions?
Any suggestions?