Originally Posted by heavyd

I had the Stage 1 and 10" subwoofer package installed last week. So after a weekend listening to it, here is my thought about the products. Overall I am happy with the result. My X's audio system comes alive. I particularly like the sub. It's deep, accurate and powerful. The speakers are clear especially the tweeters. All of my friends listen to it and said it sounds awesome. I feel a 10" sub is definitely enough for a X5 but it's just my personal opinion. I listen mostly to Trance and Hip-hop. Now even though the speakers and subs are good on their own, I do feel there there is a gap between them. I believe the reason is that the sub is powered by an ED amps while the speakers are powered by the factory amp. As good as it sounds right now, I feel I can get more details out of those MB Quartz by adding an aftermarket amp. And that's what I am going to do. I will feel completed after this...hopefully.