Speakers wont play youtube video in 5.1

[Sdr123]

Hello,
I just got the Genius sw-G5.1 3500 speakers and I set it up but for some reason when I play a youtube video, it will only play sound through the front left and right speaker and not through the rear left and right and the center speaker, my subwoofer also wont give any base.
Untill I go to playback devices and I test the speakers, then it will play on all speakers and the subwoofer. Same goes for when I test the 5.1 surround sound speaker test on RealTek HD Audio Manager. just not when I'm playing youtube through them.
Anyone who knows how to fix this?

 

[getochkn]

YouTube isn't in 5.1 so it's not going to play on 5.1.

 

[Sdr123]

YouTube isn't in 5.1 so it's not going to play on 5.1.

what about my subwoofer, I want to test my base. where can I listen to music in 5.1?

 

[ThePopeinater]

You can enable your subwoofer to work in stereo through sound options, click on what your setup is, and make sure bass management is clicked on.

 

[Sdr123]

YouTube isn't in 5.1 so it's not going to play on 5.1.

You can enable your subwoofer to work in stereo through sound options, click on what your setup is, and make sure bass management is clicked on.

but it is on... yet it doesn't work

 

[ThePopeinater]

How is it connected to the pc?

 

[Sdr123]

with some aux cables

 

[ThePopeinater]

Subwoofer is connected to the orange port?

 

[Sdr123]

does the orange port need to be connected to L-out / L-in / SS-out / CS-out or RS-out in my pc?

 

[ThePopeinater]

SS-out/CS-out is usually the port it should be plugged in.

 

[Sdr123]

it's in CS-out, what about front left and right (green), I got that one plugged into RS-out and I got surround left and right (black) in L-out.

 

[Sdr123]

I don't have an audio interface btw, I plug it straight into my pc

 

[ThePopeinater]

Pink: Mic in.
Blue: Line in.
Green: Front speakers out.
Black (or dark blue on some older boards): Rear speakers out.
Orange: Center/subwoofer out.
Gray: Middle speakers out.