Yes, me too. I even think that I have a problem with that and I'd like to ask ou guys if it is the same for you. When I open the boot while the music is playing I can't here the subwoofer working properly. When I get closer to it there is something as a bass but I'm even not sure that this is not the bass from inside of the car. And When I sit behind there it no bass compared with the front seats of the car.
How about you ?