Changing to mono or similar option?

[Ledgo2]

Hello. So I am playing on the small TV today (Compared to the front rooms) and the one thing I notice is when I play in the front room, I can hear some parts of the songs. Now, I've had this problem in GH1,2, and 3 on the PS2 and all I have done is switch the options in the sound over to mono (I think, I need a memory reset)

Anyways, I am on 360 and I cannot find that option on RB2.

[Ledgo2]

For example, some parts sound faded or not heard at all. Examples are the intro to Should I Stay or Should I Go, the fills in War Pigs, You Got Another Thing Coming has alot of faded parts I normally hear on the big screen.