Lastly! I have spent 3 hours to change the height setting to wide setting! I move my pair of AAD floor stand surround back speakers to front wide right now, and move pair of AAD bookshelf to surround back channel! The difference is huge! After two days testing, I think the front wide channel is much better than the front height provided! The soundstage now is so full now! I am never want to switch off the DSX right now! If people there that u 've got a amp that support DSX, I am highly recommend that u must install the front wide channel to your listening area! But actually compare with the front height, thare I have some view that I want to tell! The front height is a good set up too, after u have listening the height set up, the sound stage is more natural, the front area of your listening area is go deeper and higher! And the front wide is Make the the front channel and the surround channel have a very good connection between them! And the sound is really go form very left to very right! You can noctice it easily! So do u guys know wht am I saying? That mean the frond wide provide a direct sound that u are very easily to hear than the front height provide! I know that the front height is not to provide a very noticeable sound according to Dolby website! So the front wide is more exciting than front height! So the DSX is recooment the first level is u must have a front wide first! Hope this can help some people that make confuse of this new surround format!