The upper rear door speakers in my L322 2008 (Touchscreen) have stopped working, both sides, all I can hear when I press my ear against them is a slight sctaching noise.

All the other speakers seem fine.

I have checked for moisture in the electrics bay, and can find no evidence of any ingress. I have also cheked under the drivers seat for frayed cables, all seems OK there too.

search option turned up fixes for the BM54 unit, but I don't think thats the unit I've got.

System is a Harmon Kardon Logic 7.

Any clues, or wiring diagram?

Many Thanks

checked the menu settings? ... - .- -.




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I've looked at all the menu settings that I can find:-
Tone (Bass Treble)
Balance/Front to Rear

All are normal.

I've just found this topic and it's scared me to death!
http://www.fullfatrr.com/forum/topic10828....r+speakers

I wonder if there is an easier location to gain access and by pass the damage? but from the pictures, it looks like it's ore than just the speaker wiring that's suffering