Hello dear Volvo municipality, I wanted to ask if someone already has experience with the loudspeakers of Ground Zero, because my tweeters in the dashboard and one of the speakers and the rear doors are unfortunately defective and I am thinking about upgrading. I have thought about whether I take Koax speaker in front or whether that sound image changes too much. If someone already has experience with the loudspeakers of Ground Zero or has suggestions which I should rather buy I would be very happy about an answer.