I have a Philips 50PUS7303 and I wanted to improve the audio quality by buying a 2.1 sound system ( Logitech Z623). The only problem that i got, but it's quite huge, is that i can't control the volume with the TV remote. I tried multiple solutions : using the headphone jack output, getting an optical audio converter, but never got any good result. The only way to control the volume as for now is for me to get up and turn the volume button ... which gets old quite quick.

Is there any way to prevent that and control the volume with my TV remote ? I thought there was a "master volume" as on my main PC, but it seems not (which is rather weird tbh)