Hi guys, How hard is it to fit an active 'vibe' subwoofer to my car? I don't want to mess about with too many changes/wiring etc, and thought that installing an active sub might be the way to go. I have the audi 'concert' system with 6 CD changer built into the unit if that helps. Will it have the neccessary connectors at the back to just 'plug and play'? Cheers, Ricky.