Hey, I am intreseted in getting more bass out of my cars system so I was thinking on throwing in a sub. I dont want to change the deck so I was wondering if any one has wired subs up to a stock B5 A4 deck? If so where did you get this done and how much did it cost?

 

its posible. all you have to do it tap off of a signal wire so that your your amp knows when to produce power to the sub... should be pretty cheap at any local car audio shop.