Center Speaker Channel Conundrum


(Cross-Post with Amps/Preamps, Misc. Audio, Home Theater, and Digital Topics) Greetings, I have a Marantz AV7005, probably seven or eight years old, which purports to resolve Dolby Digital Plus signals as one might receive through Netflix, Amazon Prime Video, and so forth.  Indeed, when playing such sources, the pictogram on the Marantz display screen reflects "Dolby Digital +," and the owner's manual lists DD+ as a supported, decodable, transmissible signal.  


Here is the problem — across different streaming devices (PS3, PS4, and now a new Roku unit) the center channel will not produce sound from Netflix or Prime Video programs.  Instead, the center channel signal apparently splits into the left and right front speakers (piggy-backing on the appropriate left and right front signals). 


Oddly enough, the Marantz’s display pictogram not only reflects the correct DD+ signal and codec, but all of the relevant speakers are illuminated as being recognized and fed, including the center channel (center, left and right fronts, left and right surrounds, and subwoofer are all shown as active).  Indeed, all of the other speaker channels play and sound fine, including the subwoofer. 



As for other potential contributors, the center speaker itself works fine, and when fed by the same AV7005 and amplifier connection, plays through multi channel stereo and other programs perfectly well.  Thus, I know both the speaker and amp channel operate correctly.  The speaker EQ is also set sensibly, with the center channel not suppressed unduly from a volume standpoint.  


So, does anyone else experience this?  Any thoughts on how to resolve this riddle? Thanks!


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There are some programs on Netflix that were produced with only 2 audio channels, even though Netflix transmits the audio as DD+ 5.1.  If this "missing center" channel occurs on EVERY Netflix show, then you do likely have a problem somewhere.

Sometimes you can force your receiver/processor to "Dolby Pro Logic" mode where it will try to decode a center channel from the 2-channel audio (which is likely encoded as Dolby Pro Logic).
Netflix, Roku, all those Roku channels I. Have to jam the volume to hear vocal chatter.
Poor audio is all.
which is why I love my stereo hooked up to my elite dv-48. The Star Wars battle scenes, John wick, car chases in bullit, all sound great. A good %60 better through DVD player.







Oh, and, yes, our center channel plays, but is hardly putting out sound, it does, it just sounds very poor.
put on a dvd, and BAM, perfection. 
Thanks, I will keep tyring to solve this.  The center channel speaker is putting out nothing whatsoever through the Netflix or Amazon feeds.  
I left an answer over in the home theater thread.  I hope it helps.