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  1. #1

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    Default Why does 5.1 change to 2-channel audio via optical cable?

    Why does 5.1 change to 2-channel audio via optical cable?

  2. #2

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    It doesn't unless you have a system setup wrong, List your gear, how you have it wired up, and what your trying to accomplish and we can better help you.

  3. #3

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    Depends how it is set up.
    Main Surround -
    Epson 8350 Projector/ Elite Screens 120" / Pioneer Elite SC-35 / Sunfire Signature / Focal Chorus 716s / Focal Chorus CC / Polk MC80 / Polk PSW150 sub

    Bedroom - Sharp Aquos 70" 650 / Pioneer SC-1222k / Polk RT-55 / Polk CS-250

    Den - Rotel RSP-1068 / Threshold CAS-2 / Boston VR-M60 / BDP-05FD

  4. #4

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    Are you going optical out of a Samsung TV?
    2CH Setup.
    CM9
    Rotel RC-1550
    Rotel RB-1070
    MIT AVT2 Interconnects

  5. #5
    Audiophile
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    Are you trying to use Dolby TrueHD?

  6. #6

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    Lets start from the beginning. What is your source?

    is the optcal out from a DVD player, computer, cable box, apple tv?

    most of the time you need to go to the audio settings of the source and turn off PCM, turn on 16bit, switch from PCM or DTS over to dolby digital.

    Even if your surround sound processor is set to 2ch or dolby prologic music it will switch to dolby digital 5.1 when it gets the dolby signal from the source.

    So, What is the source?
    2CH Setup.
    CM9
    Rotel RC-1550
    Rotel RB-1070
    MIT AVT2 Interconnects

  7. #7

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    I guess the OP is MIA, maybe never really had an issue or figured it out for himself.

  8. #8

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    I hated when OP go MIA. I wanted to know if the problem was solve or not. I had someone asked me this before, and I wasn't really sure how to answer it.
    AVR: PIONEER SC-1522-K
    FRONT L/R: MONITOR 70 II
    CENTER: MONITOR 25C
    SURROUND L/R: JAMO S426
    SURROUND BACK L/R: ENERGRY EF-500
    SUBWOOFER: DUAL KLIPSCH RW-12D

    SERVER: UNRAID 15TB
    MEDIA PLAYERS: DUNE SMART SERIES D1
    HDTV: SAMSUNG PN50A650

  9. #9

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    I use an optical toslink w/ my Yamaha RX-V655 and get full 5.1 actually it says 7.1 but I use the zn 2 feature to run a set of bookies in the bdrm.You can not do both and I don't need 7.1.Got know what he's using.
    2chl- Adcom 555- Onkyo P-301 pre- JVC-QL-A200 tt- Denon 1940 ci cdp- Samson PS-15 9 outlet- Niles Sp 6- 6 zone spkr selector- DCM TF 350s- ADC 303ax-KLH 331- Polk Audio '87 SDA 2Bs w/ ic cable (Dynamat extreme, black hole-5- Mills 0.5 resistor, liquid nails, RDO- 194 tweeters, Larry's rings, Armaflex gaskets, stained walnut tops )

    H/T- Toshiba au40" flat- Yamaha RX- V665 avr- YSD-11 Dock- I-Pod- Klipsch #500HD Speaker set- Sony ce 375 5 disc carosel cdp-

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  10. #10

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    I know that toslink / SPDIF cable isn't capable to carry DTSMA / True HD. It can only carry the core DTS / DD sound track. You can change the audio setting from your AVR, and make it a 7.1 extended stereo set up.
    AVR: PIONEER SC-1522-K
    FRONT L/R: MONITOR 70 II
    CENTER: MONITOR 25C
    SURROUND L/R: JAMO S426
    SURROUND BACK L/R: ENERGRY EF-500
    SUBWOOFER: DUAL KLIPSCH RW-12D

    SERVER: UNRAID 15TB
    MEDIA PLAYERS: DUNE SMART SERIES D1
    HDTV: SAMSUNG PN50A650

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