Completely new to this world and at my wits end with setting up the AV, a pioneer VSX919. It calibrates fine and all the speakers seem to be hooked up right and result shows ok. But I am not getting surround sound i.e. some sounds are coming mainly from the front speakers. Have tried all audio options - set on adv surround sound, drama/actions etc. Both TV and Blue Ray are hooked up via HDMI. Can anyone shed any light, please!