I have had my set for about a month now (it replaced another set after 4 weeks). Much as I love the superb picture I am hugely disappointed by the audio performance. Low level performance is adequate, so long as it is speech. As soon as you add music (say in the background) it all starts to go wrong. The speech becomes very difficult to understand. Turn the volume up (or if the soundtrack gets a bit meatier) then it is frankly terrible. The back of the set resonates appallingly. I have tried applying blutack straight from the pack to areas of the back and it does make a difference. Unfortunately at higher volume levels (by which I mean anything above 50%) you can hear distinct resonances INSIDE the cabinet so it is not possible to damp these out so easily. I did not buy this set with huge expectations on the audio side, but now, in 2 examples it has been so poor that I have had to bring forward my investment in A/V receiver and speakers. Cinema experience it is, but only as far as the picture is concerned... Either I have been very unlucky to get 2 sets with similar audio problems or Philips have seriously screwed up with this part of the set. Does no-one else have any problems like this?