Question How to enable 5.1 ch and Dolby digital in PC with Soundbar

[rtxWARDADDY]

I have bought Soundbar with 5.1ch & Dolby Digital I have connected it to my desktop using Optical cable, is there anything more need to to get most out of it?
here is few queries I have:

1. iam not getting the 5.1 option in spatial sound(output is selected to the sound bar) it just shows headphones there.(images attached)
2. how to know that 5.1ch & Dolby digital working correctly?

Here is my PC specification:
Intel® Core™ i5-12400F Processor
ASUS TUF GAMING B660M-PLUS D4
Adata XPG Spectrix D50 RGB 16GB (8GBx2) DDR4 3200MHz
ZOTAC GAMING GeForce RTX 3070 Ti Trinity OCCrucial
MX500 500GB 6.35 cm (2.5-inch) SSD
Antec HCG-1000-EXTREME SMPS
Antec DF600 Flux
DEEPCOOL GAMMAXX 400 V2 Blue LED air CPU Cooler
OS: Windows 10

Soundbar: MOTOROLA AmphisoundX Vibe Dolby Digital 500 W Bluetooth Soundbar (Black, 5.1 Channel)
Optical Cable: https://zebronics.com/products/zeb-oc150

 

[dwd999]

1. i am not getting the 5.1 option in spatial sound(output is selected to the sound bar) it just shows headphones there.
2. how to know that 5.1ch & Dolby digital working correctly?

Spatial sound's full name is Windows Sonic for Headphones and is designed to only work with headphones.

If you open the Windows Control Panel Sound app and select the Supported Formats tab you should be able to select the Dolby Digital format and when you press the Test button, you should here sound from each speaker.

 

[gptechman]

in sound settings via control panel find the optical output and click it once then click on configure from there you can set it to 5.1 surround.