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sypop Avatar
banned7y, 6m agoPosted 7 years, 6 months ago
I'm baffled as to what's going wrong, i'm using realtek HD audio manager, and my onboard sound on the motherboard which is capable fo 7.1, however i'm using a 5.1 system, which works via one 3.5mm jack from the surround sound to the computer, realteck won't allow me to choose that one output as several (subwoofer, centre, l+R, and rear speakers. im baffled and don't know what to do, i am using the GA-MA770-DS3 motherboard and any help would be greatly appreciated
sypop Avatar
banned7y, 6m agoPosted 7 years, 6 months ago

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If you are using one output, are you using a digital output (via SPDIF or coaxial cable)? Your description is too vague to verify if this is what you are attempting to achieve. When digital output is selected you cannot set the surround sound settings on your computer because the output is a raw digital signal sent to a receiver. The receiver decodes the digital sound (with the multi channel signals encoded) and so the speaker settings are configured within the receiver.

If you need to set the subwoofer, centre and left/right speakers that are DIRECTLY connected to the soundcard (rather than via a receiver), you need 3 analogue connections. One connection supplies analogue signals to the left/right speaker, another feeds the rear speakers and the third connects the centre speaker and subwoofer.
So, you're trying to run a 5.1 surround speaker system with only a single stereo cord?
So, you're trying to run a 5.1 surround speaker system with only a single stereo cord?

If this is what your doing, you won't get true 5.1 - the most you can get is upmixed 5.1, or if it originally used more leads you'll only get sound from the front 2 speakers.
Realtek won't let you do that as it's not possible to do real 5.1 down one jack. So as far as it's concerned you don't have 5.1.

Don't confuse the connector with the signal, AV is even worse than networking in that respect.

3.5mm is commonly used for 2-3 channel per cable analogue output but some cards can also use it for S/PDIF which can carry 5.1 surround sound. As your motherboard has seperate TOSLink and RCA (optical and coaxial) S/PDIF outputs it seems unlikely that it'll provide it over a 3.5mm jack though so what you're trying to do is likely to be impossible.

I'd say either plug in the other two analogue 3.5mm cables or use the TOSLink/RCA digital outputs if your speakers/amp support them.

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