Hello. Wondering if anyone has a similar issue with rear speakers (4, two per rear door) and subwoofer in the boot. My Beats Audio 10 speaker sound system has 100% sound quality and output to front dash speaker and front door speakers (2 per door). However, the rear speakers only output about 10% volume even when all sound output is directed to rear only and subwoofer is nonexistent. Dealer has looked at it twice now in consultation with Seat/VW Ireland (they were suggesting possible fixes) but thus far, no joy. Anybody got any ideas/advice/suggestions? Thank you.