Loudest Sound Ever?

dweller3, indeed!
And going the other way, from Discovery.com
"It may be possible to destroy everything with a loud enough sound. NASA estimates the mass energy of the universe at 4x1069 joules. But that number is considerably smaller than the energy created by 1,100 decibels of sound."

I went to a deep purple concert thst was on average over 105db 
my ears buzzed for 2 days ,Burn concert tour 

I saw twin V12 2 stroke Detroit on fuel, Blower, fed by a pair of BIG turbos at the tractor pulls. There was a couple of Cats and John Deere too. The big cat was 4 stroke, you felt it 1/4 mile away no problem.

But that Detroit with open exhaust I don't see how the operator could stand it. I sure couldn't. There was so many noise complaints, that never happed again.. LOL

Made a Merlin gas engine sound like a toy.. and they are loud too with open headers.

The explosion of the French munitions ship SS Mont Blanc in Halifax, Nova Scotia on Dec. 6, 1917. Over 2000 dead and 9000 injured. Blast equivalent to 2..9 kilo tons of TNT. This was the largest man-made explosion at that time!