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<blockquote data-quote="Dubyahjay" data-source="post: 229220" data-attributes="member: 57468">If you are using optical/coaxial SPDIF you sound card doesnt make a lick of difference. Basically, SPDIF is a transport for digital sound that &quot;should&quot; be pure to the original audio track. In the case of AC3/DTS, your reciever will get the digital stream from the SPDIF connection and decode it. If the soundtrack is not 6.1 (which most are only 5.1) you will only recieve 5.1 surround sound. Again, this is only if you are passing unmolested audio through the SPDIF connection. A good utility to do this easily is SPDIFer. To update, the only transport that can carry 7.1 (8 channel) audio is HDMI 1.1 -1.3. So you will not get discrete 8 channel audio from SPDIF.Using FFdshow you can do all sorts of matrix upmixing/downmixing/levels/LFE/etc. Only do this if you want to change the original audio stream. To utilize your extra two speakers, your best bet is to use a soundmode that is built into the DSP of your reciever.Was that clear? Let me know if i can be of more help.</blockquote>

[QUOTE="Dubyahjay, post: 229220, member: 57468"] If you are using optical/coaxial SPDIF you sound card doesnt make a lick of difference. Basically, SPDIF is a transport for digital sound that "should" be pure to the original audio track. In the case of AC3/DTS, your reciever will get the digital stream from the SPDIF connection and decode it. If the soundtrack is not 6.1 (which most are only 5.1) you will only recieve 5.1 surround sound. Again, this is only if you are passing unmolested audio through the SPDIF connection. A good utility to do this easily is SPDIFer. To update, the only transport that can carry 7.1 (8 channel) audio is HDMI 1.1 -1.3. So you will not get discrete 8 channel audio from SPDIF. Using FFdshow you can do all sorts of matrix upmixing/downmixing/levels/LFE/etc. Only do this if you want to change the original audio stream. To utilize your extra two speakers, your best bet is to use a soundmode that is built into the DSP of your reciever. Was that clear? Let me know if i can be of more help. [/QUOTE]

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