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Thread: VIA MII 1000 5.1 Sub out

  1. #1
    Constant Bitrate ZtH01's Avatar
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    VIA MII 1000 5.1 Sub out

    Is there a trick to getting the sub out to work on the built in sound on the VIA MII 1k motherboards? I have 5.1 enable in the volume control screen, and have my MTX amp hooked up to the sub out(mic in) on the board. I have a regular head phone type plug to RCA plug Y cable thingy. Currently I have the same cable going from the regular front speaker out to the big MTX amp, which is daisy chained the little MTX for Left channel mids/highs, which is daisy chained to the other little MTX for right channel mids/highs. This setup is the same setup I had with my old blaupunkt head unit, and it works, but I'd like to be able to indepently change the sub volume.

    In theory this should work, but I get nothing. I have never dealth with sound card 5.1 solutions as I have an oldschool Denon decoder/amp at home. Is there something funky I have to do with wiring as the output is also used for the center channel. I've also downloaded the newest drivers from the Via website with no luck.

    So, is there a trick or do I have a dud motherboard?

    Thanks,
    ZtH01

  2. #2
    FLAC
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    wait, did you say that your sub out was your mic in? It should be the ceter channel. What you may want to do is get an active crossover that can split the sgnal before hitting the amps, that way you get your center highhs and your sub lows without sacrificing anything.

    . sub/center out ~~~~~~~~~~~~~to center amp
    (MII)---------------------(crossover)========
    .~~~~~~~~~~~~~~~~~~~~~~~to sub amp


    You have your big amp to your two small amps? why? I'm not undestanding the reason or thought process behind it. I'm a bit slow theses days, so forgive me.
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  3. #3
    Constant Bitrate ZtH01's Avatar
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    On the Via boards the mic input can be switched to sub/center out by enabling the smart 5.1 function.

    I have no center speaker... I just want to have a dedicated channel to the sub amp, so I can control the bass level a little better.

    My MTX amps have line outs with an adjustable crossover. So, the sub amp gets the the full range input from the VIA board. It powers the subs, and sends a high pass line level signal to the first smaller MTX. That amp powers the left set of component speakers. It sends a full range(which is effectively high pass, because of sub amps output crossover) low level signal to the other little MTX which powers the right set of components. It works fine, and no additional crossovers are needed.

    So, it's not a problem with the amplifiers, for some reason the the smart 5.1 thingy is not working. I tried hooking the sub amp up to the rear channel of the sound card too, which in non 5.1 mode is the line in. I got nothing as well. So, I have a feeling the smart 5.1 was never really enabled and I just need to figure out how to enable it.

    Thanks,
    ZtH01

  4. #4
    FLAC
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    i see it now. that's diffeent, didnt know you could do that. With your problem though, if its VIA software, i'm sorry, i can't help you.
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  5. #5
    Variable Bitrate
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    sounds like one of those stupid settings,.... I had the same sorts of problems when I got my first surround sound card.

    Make sure it is set for surround sound through the contorl panel, in windows. This ended up being my problem more times then not.
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  6. #6
    Constant Bitrate
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    I was having a go at this the other night, and didn't manage to find a solution, so would be very interested to hear one!

  7. #7
    cheap custom title JC-S60's Avatar
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    Don't know if it's only a software solution or maybe also jumpers that need to be set...

    Or maybe driver versions? Did you try the vinyl drivers?

  8. #8
    Constant Bitrate
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    I've not tried any drivers other than the latest via ones. There is one jumper on the board which selects what the RCA type socket outputs (either Composite video or 5.1 surround) I tried both positions on the board and it made no difference to what I was trying to do.

    The other thing I did think of was that maybe you needed to be playing a surround sound sound source (5.1 DVD) for the other chanels to have any effect? I only tried mp3s.

  9. #9
    cheap custom title JC-S60's Avatar
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    Are you sure they are the latest?

    Via is known for not putting them in the right place on their website... Check Viarena...

  10. #10
    Variable Bitrate Superduck's Avatar
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    I'm not completely sure if I've got this figured out, but I'll give it a shot.

    You've got three min-jacks, one is Front left/right, one is rear left/right, other is sub/centre.

    First, you have to make sure that your Y-splitter is stereo, and not mono. Second, you have to make sure that you're connecting the sub output to the amp, and not the centre channel output. It's just like a left/right stereo connector, except instead of a right and left channel, you've got a sub and a centre channel.

    If it's not working, try connecting the other half of the Y to the amp instead.

    Also, try using a DVD with 5.1 as your reference.

    Cheers,

    Kris
    How Much Horsepower Can I have And Still Go To Heaven?

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