Originally Posted by jester959
Well only the front 3 speakers were lit up when using Straight on the ABC show. Wasn't near as crisp as the other shows. But, you're right on the other part. The info screen said it was Dolby Digital, but that it was also sending at only 2.0. I changed it to 7.1 Stereo and it was fine, but after reading the manual and your comment it sounds like I should use the SUR.DECODE mode to PLIIx Movie or even Neo:6 Cinema when the audio source is like that?
Yes. Dolby Digital can have any number of channels up to 5.1. It can be 4.0 (e.g. one of the sex, lies, and videotape
releases faithfully reproducing the theatrical mix), it can be 2.0, it can even be 1.0. It's jus the audio stream they're using to transport the original channels of the content.
may have been encoded in Dolby Surround (e.g. older home video releases from the 90s, or 70s/80s/90s movies that were released in a "Dolby Stereo" two-track 35mm print to be decoded to 4.0 or 5.0 presentation in a theater), so your Dolby PL II decoder will correctly matrix the content to the proper speakers.
As another member said, some Yamaha receivers will switch to SUR DECODE when there is no audio stream or 2.0, but then switch to Straight
when it receives multi-channel content > 2 channels. The Surround Decoders are meant to matrix 2-ch content to multi-channel, so that circuit turns off when the audio stream is already discrete multi-channels. I hope this makes better sense.
Not sure what "7.1 stereo" refers to. Yamaha has two Cinema DSP modes 7ch stereo and 2ch stereo, which down mixes multichannel content to stereo then distributes to speakers. 7ch Stereo is not a surround decoder, it will mix any audio stream to stereo and put that content in all the speakers accordingly. So you would have front channel content in your surround speakers, NOT the matrixed surround-only content as you would from Dolby Surround encoded films. Some say "this sounds better," because they're "hearing more from the surround speakers," that's not better or even correct.
Originally Posted by bgrpph
have yamaha TSR7790 with 5.1 Def Tech 8060 LCR/8040 surround with sony 940C TV- have Time Warner Cable w/Cisco 9865 6 tuner DVR-
I'm also having same issue with some ABC shows- Some ABC shows cause the sound to be really strange- like recessed & come not from center speaker or LR correctly but more thru surrounds- regardless of what DSP i use or using straight- or on surround & using DPLII- its just not correct & hard to hear- only way i can listen is if i use 7 channel stereo then it listenable as its coming thru all speakers the same.- any other mode its hard to hear the dialogue- its like its recessed & not coming thru correct speakers- i've sent emails to local station & TWC but got no responses. - its not all ABC shows but some of are like this & then a few episodes later of same show its back to normal sound again- very weird-
Use your TV and AVR info/display options to show you what the audio stream is. My Samsung, the "INFO" button for content tells me if the program is 480p, 1080i, Dolby Digital 2.0, Dolby Digital 5.1, etc. On the Yamaha, use the DISPLAY button, or go On Screen, Info, Audio to tell you what audio stream the AVR is getting.
Then we can figure out what's going wrong.
Also: are you using HDMI-ARC, or SPDIF, for audio back to the AVR? Or are you watching ABC from a cable box connected via … HDMI? SPDIF? RCA red & white analog?