Hi all, I have recently swapped my 13 year old Yammy Dolby Prologic amp for the Yamaha DSP-AX763 I have just two questions, I have a 5.1 speaker system, the manual says to select the extra surround back speakers to none, this being my case because I have no extra surround back speakers, but it also says If I select none true hd sound tracks will not be passed to the normal surround speakers. Does this mean I will be not able to hear the True HD sound tracks on my 5.1 speaker system, if this is the case I may just as well use the digital coax connection on my blueray player to connect to the amp and connect the hdmi direct to the plasma tv.

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Second question, is there any way of reducing the video output of the Yamaha DSP-AX763, when connecting my blueray player by hdmi via the amp the pictures are just too bright with high contrast level. If not I will have to re configure the plasma picture settings again. Many thanks for all your help to date. PS Great sound quality. Regards Mansel. Hello, I have the 763 and will try to answer your questions, I do agree the manual is a little confusing. Right as far as the speaker question goes, you will get true HD and DTS MA soundtracks on a 5.1 setup, what the manual is refering to is that if you have a disc with a 7.1 soundtrack the surround back left/right signals are ignored because there are no speakers to recieve the signal.