Hotwings07

I just bought a 2010 Ford Edge Limited w/ NAV system and the intro package to Sirius. I just noticed that the sound quality of the talk channels, e.g. NASCAR radio, sounds like the voices are in a box (similar to an EQ setting of a concert hall). Is that the normal sound, or is there a way I can change that? I don't have the option in the DSP menu to change from "surround" to "stereo" (maybe cause I don't have the DVD option?).....it just gives me the option of "all seats", "front seats" and "rear seats". When playing music, the sound 'seems' ok, especially good when playing my iPod. Or is it just me and I'm not used to the sound quality.