If they are cranking up the tunes - whether it be on your rig or not - to impress the ladies, we obviously have a small-penis issue here. More specifically, the size of the wang is inversely proportional to the decibel level - don't ask me how I know this (but just know that my Denon AVR is only rated 110 watts, mkay?).
The ladies will eventually find out about the small-penis issue firsthand, quite literally, and then your roommates-cranking-up-your-rig-to-dangerous levels problem will go away! Yay!