[SOLVED] B450 Motherboard, unable to get 5.1 to work.

[UberOriginal]

I have a B450-F motherboards, due to having a B350-F and I could not get it to work with my speakers so they sent a warrenty replacement that has the same problem. The setup I have is a Bose Cinemate 15 soundbar with sub, with it just plugged into the green port it acts as FL, FR, Center and Sub, and I have my older Bose Companion II computer speakers in the black port as rears. Now with only the 2 3.5mm jacks, when I go into speaker configuration in either Windows 10 or the Realtek HD Audio Manager it shows me having a full 5.1 Setup. One odd thing along the way I'm not sure if this is related, but in order to hear the Center channel, I have to uncheck it to hear anything. When I run the basic test it goes through FL, FR, Center, Sub(no matter what I do checked or unchecked I cant get the test to sound the sub) then RL and RR. every speaker but the sub sounds off just fine, even with the soundbar acting as FL Center and FR. I dont know if it has some sort of hardware surround, IDK.
When I play music with MediaMonkey I get 5.1 sound and can hear everything wonderfully including Sub. But in anything else like movies(Even with 7.1 Channel included Videos) The rear sounds like it is playing at 5% the volume of the Front and Center. There used to be an option called "Speaker Fill" which caused the rear channel to mirror the front channel when no rear audio is detected, which worked very well but I believe it was taken out in a Fall Cumulative Windows 10 update. So I am looking now into finding a decent Digital to Audio Converter because the mobo has optical audio out which works very well directly into the soundbar setup but then still no rear channel. It is my understanding that digital audio can carry 5.1/7.1. I've found a few, well 3 actually that I think may work, but I'm not sure if they can do 32-bit, I like to run at 32bit-48Khz. I would think that and adapter that accepts digital should be able to pull that off. I'll post the 4 DACs I found at the bottom. I'd really love to spend less than 50$ on a solution. Any advice or guidance is greatly appreciated. Thank you.

https://www.amazon.com/Channel-Exte...6+Channel&qid=1587073926&s=electronics&sr=1-1

https://www.amazon.com/Vantec-NBA-2...coding=UTF8&psc=1&refRID=PK5D218M5Q1XDCAQ8KYE

https://www.amazon.com/StarTech-com...d-search-10&pf_rd_t=BROWSE&pf_rd_i=3015427011

https://www.amazon.com/dp/B07YB1Z2Y...uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl

 

[popatim]

I beleive your issue is that you don't have true 5.1 . The orange jack is the sub out and If your bose is the one I'm thinking of, it gets is sound from passed down from the soundbar and is not plugged into the jack. .