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How to get 5.1 audio without optical cable or HDMI

uaxpasha

Prominent
Jul 1, 2017
2
0
510
I have old sony audio system Sony DAV DZ250M and new TV sony kdl43 755c which had HDMI and optical input, but audio system have HDMI OUT only. Can i reverse it or what other options do i have (if i have any) to get 5.1 surround sound? Are sony really can't give me 5.1 with all their electronics?
 
The pictures I can find for that Sony don't have any multi-channel inputs and the only manual that Sony has is in Russian. I believe the answer is: You can't get audio from your TV to the Sony.