Si, il tipo e' un grande!
Ora e' passato a Dirac e a suo parere non tornerebbe indietro...
Interessante anche la parte sul centrale:
Why is dialogue from the centre channel difficult to hear or understand?
This may be caused by Audyssey Dynamic EQ (See Reference Level Offset), centre speaker placement or room dynamics. First check that the centre speaker is working correctly and that the tweeter is connected and working. Pink noise test tones will be good for this. Put your ear close to the drivers and tweeter in your centre speaker (not too loud!) and check that they sound like they are working properly. If they are, then try the following before running Audyssey again:
Poor dialogue intelligibility is often the result of reflections in your room. Does your room look like it may fall into the 'reflective' category? If so consider adding room treatments, drapes, bookshelves etc to try to damp down the reflections. When you clap your hands in the room, does the noise continue to 'ring' for a brief moment? If so then your room is definitely too lively and this may affect dialogue intelligibility. Pay especial attention to the 'first reflections' from your speakers - side walls, floor, ceiling.
A simple way to locate the 'first reflection' points in your room is to have a friend hold a small mirror against the wall while you are seated in your Main Listening Position. Have the friend move the mirror around the wall until you can see the speaker in the mirror. The location of the mirror is a reflection point. Remember you also get first reflections from the floor and the ceiling!
Is your centre speaker in a cabinet or on a shelf? If it is, then pull it forward so the front edge of the speaker clears the front edge of the cabinet or shelf by an inch or so. This can make a huge difference.
Is your centre speaker angled so that it points towards your ears at the Main Listening Position? If not then angle it up (or down, depending on whether it is below or above the screen).
If your centre speaker is on the floor, then raise it up on some sort of stand. Again, angle it towards the Main Listening Position.
If you have a reflective coffee table between your centre channel and the Main Listening Position, consider permanently* removing it. These are often the cause of dialogue problems. Glass is especially bad. If you can't remove it, cover it with something to damp down the reflections - eg books or magazines. *Do not remove it for the calibration and then replace it afterwards!
If you have a hard wooden floor, consider a nice thick area rug to help damp down reflections from the floor.
It may be the source material which isn't mastered very well, so try a different source with known good dialogue reproduction (check some DVD or Bluray reviews).