How loud is your amp? (dB-SPL)

I'd love to know. I tend to wear earplugs and/or leave the room while reamping or playing, and I haven't gotten an SPL meter. :)

I'm sure it's frightening...
 
A few friends and I did a plexi based amp shoot out about a month ago and just to put a number on the damage we found that Peter's original 50watt plexi head with greenbacks put out 139 db at 3 feet with Tom's 120watt Rocaforte head with V30's did 146db. "Come on feel the noise!"
 
Well usually my recto when it's time for reamping is at uhm.. well.. I may say 12 o'clock... pretty loud I think.
Passed 12 my speakers can't take that insane level, so I keep it at 12, at 1 o'clock the sound is not tight as at 12 and it seems is killing the speakers
 
I think I own some of the loudest amps available (2203, VHT 2150, MEsa 295, 6505)....
I turn-em LOUD AS FUCK when recording, I'd like to know how loud "fuck" is in my case thru a v30 4x12....maybe I'll get myself a dB-Meter someday...
I heard Hiwatts are extremely loud, does ne1 own one?