Hi all, I've searched the net and found some topics on this but never really gotten a definitive answer. There is no genius bar in my city, and no Apple store. Only Apple retailers. Just wanna say this now. I just got my new MBP 15" today, and with certain sounds and audio playback the right speaker vibrates the chassis/keys and it is actually pretty irritating. It happens above 50% volume. Is it normal for Macbook pros to have some speaker vibration or not? Should I be concerned, and should I take it for replacement? The other thing I've noticed, which could just be me, but when I was listening to some music on Youtube at full volume on everything, the system doesn't really put out that loud? I dunno if this is just my standards being too high for laptop speakers or not. Both left and right work but even at full volume they aren't very loud. Just need to know mostly about the vibration and if this sounds similar to anyone else. I'm freakin' out!