I have a 2006 x type with sound issues. If I turn the volume all the way up, I can hear some sound out of the tweeters and the sub woofers, but nothing out of mid range speakers. The others sound quite muted but are audible. I have searched for days for a drawing for the premium system, but all the ones I find do not seem to match what I have. The two sub woofer speakers on the back shelf have different colored wires then what I have found for drawings online. One has a red and a black wire, and the other one has a yellow and a blue wire attached. Does any one know where I can get the correct wiring drawing so I can try to connect speakers in the trunk, at the amp, to determine what the problem is. Or does anyone know which color wires go to which speakers?

 

This sounds EXACTLY like what we had going on in our 2006 X-Type VDP, except the rear door speakers worked. If I set the balance to full front, I got.... sub and tweeters. Nothing else. And they sounded a bit muffled. Also the voice navigation didn't work (apparently she only uses the front speakers).

Replaced the front door speakers. Fixed. Blown speakers are apparently a known issue with the alpine systems.Remove one of your front door interior panels, connect a correctly matching speaker and give it a try. If that speaker works, you may just have all bad speakers.

 

Had the exact same issue with my car. When I bought it found that all four door speakers were blown. Bought some used ones from a breaker yard and it sounds fine now.