claytonduk

hello all ..... just bought a 2010 TT roadster convertible. passenger door speaker is not giving off any bass but the drivers side cranks. is the drivers side a subwoffer of some sort? I took off the door panel on the passenger side and found an 8 inch 2-way speaker. I took off the passenger side only because it was loose and had to be fixed. also when I play just the front speakers the rears totally shut off. but if I change the balance to play only on the passenger side I can still hear the drivers side and vice versa. does this sound like a passenger door speaker issue or a problem with the head unit. thanks for any help!