Many times at notting hill carnival I have stood in front of a 20 foot tall wall of speakers and had my vision go blurry due to the 30Hz bass tone at 125db maki

Many times at notting hill carnival I have stood in front of a 20 foot tall wall of speakers and had my vision go blurry due to the 30Hz bass tone at 125db making my eyeballs oscillate in my skull. Ahhh, notting hill...