Sound volume problem

When I set my speakers to 2.1 in the control panel, the sound is correct in the game. However, if I have them as 5.1, the announcer volume is very low, and even the music is lower in the game compared to the main menu music and sound. I have an Audigy 2 ZS and a set of 5.1 speakers (Logitech 5500). Is there any way to fix this?

Weird issue, I don’t get that problem with my Logitech 5.1 set-up