recently i bought all the dlc for fallout new vegas pc, and today i finally got around to playing dead money (i'm about level 23) and i'm at the med center, and i'm on the first floor near the auto docs and i can't destroy the speakers with the red light (how do i destroy or disable them)??

You don't unless there is a computer or something that turns them off.

There are radios or computers to shut them off, you just have to find them.

The red speakers are indestructible - some of them can be turned off by a nearby terminal. For the ones you can't turn off, all you can do is get out of their range before your collar goes BOOM!