Originally Posted by Bob Pariseau
By Rear speakers do you mean you have a 7.1 speaker configuration, or are you referring to your Side speakers in a 5.1 configuration as Rears simply because of their physical positioning?
Are you using the Analog audio outputs? Check to make sure you have DTS Neo:6 Mode set to OFF.
Also, and again, if you are using the Analog outputs, at the back of the OPPO swap the two Rear output plugs with the two Side output plugs. If the problem stays in your Rear speakers then you know the problem is external to the OPPO -- cables, amps, speakers picking up interference.
If you are using HDMI output for audio, try the same thing for the output connections at the back of your AVR or sound processor. Similarly, check to make sure you don't have an audio Surround Sound Processing mode turned on in your AVR or sound processor.
By rears, I am referring to the surround channels of my 5.1 setup. I am running the Oppo analog outputs directly into my Anthem PVA7 amplifier. NEO6 processing is set to off. All speakers are dead silent until I start playing a 2 channel audio source. As soon as I stop or pause the music, everything is dead silent. If there is 2 channel source audio playing, I get the static sound from the surrounds and center channel.
I tried running the surround speakers to a different amp channel of my amp. I did have them in the rears channel anyway, so now I have put them into the output labeled surrounds on my amp.
Playing my latest Blu Ray title, Queen Hungarian Rhapsody with 24/96 5.1 DTS-HD, there exists the same noise when running the 2 channel track, but I cannot tell if the noise exists while playing the 5.1 track. There doesn't seem to be any break in the surround channel audio so I can't tell. On my copy of The Dark Knight, the static is there when the rear channels are silent when running the 5.1 track.
If it was interference through the cables I would understand if it was always present when there was no source being fed to the amplifier. However, I do not buy the interference argument due to the fact that when there is no playback ALL channels are dead silent.