Honest opinions on my two picks of loudspeakers

Thanks, there is an excellent history of the company written by Susan Wickersham on the Alembic website, including the retail store/ custom pa work. So happy they are still around!!!

@j_damon thanks for the clarification, I meant the pro sound end of things, an awesome bass for sure, so good to know still kicking

Dude!!! Enjoy the Cornwall in good health !!!!!

And the initial PA for the Dead was 4x MC240 tube amps in mono :-) I still have a 1961 running rebuilt 1972 Cornwalls, certainly capable of high SPL

Alembic ( rip ) also helped w Wall of Sound engineering, it was much more complex and sophisticated than a pile of speakers and amps and also just about bankrupt the dead

fun

OP sorry for the terse post, you will care later, when it is 2 late, I have worked mixing sound in rock bands since I was 16 off and on, always w hearing protection available and have excellent hearing at 58
the Revel are fine speakers, just not designed for the SPL you are calling for. Mac did at one time have some line arrays ( xrt 28 that could sound pretty good, see Roger Russel ) I have heard the newer Mac stuff w a gazillion tweeters with both Mac and Boulder amplifiers and was not impressed.
JBL and others make compression driver horns speakers that do sound quite good and provide high SPL and the high duty cycle needed for longevity
summit series would fit your bill
check out Everest to understand trickle down
best to you
Enjoy the music 

Save yourself a lot of heartache and buy JBL , and hearing protection