I've narrowed it down to these two, both used, and I don't want more than one cabinet. Will I get better frequency range and dynamics from one or the other? I will pair this with a Mesa BB 750.
The PH will destroy the Ampeg. That's an easy one. Its a perfect companion the the BB750, and is probably easier to transport since it does the tilt-and-roll trick.
The Ampeg also has tilt and roll and is smaller in size. Its a great stand alone cab. I've heard from many that Mesa heads match up best with Mesa cabs. So if you won't have a problem transporting a 6x10, I'd go with the Mesa - its also an awesome cab that you will not be dissapointed with.
+1... although I must say - even as a vocal Ampeg critic - the OP's comparison was hardly fair to Ampeg... A fairer comparison would be between the PH 610 and the SVT610-HLF: I compared those 2, and also SWR's Goliath Sr, and to my ears, the Mesa was clearly the best of the three 610s - better lows, clearer highs, and had a depth of sound(for lack of a better description) that the Ampeg and SWR didn't... I will add that I could easily get the job don'e with any of the three... - georgestrings
I generally agree, but the way the 410HLF is marketed ("you'll never need a 15! its ported! tuned SO LOWWWW!") the question was was it full range enough. I know the 610 is a better cab. Maybe a better question was, for $400 less/40lbs less/6 inches vertical less, is the Ampeg a contender? These are the two used cabs I am deciding between. I run a fair amount of gritty/distorted tone (think Chris from Muse), and I've heard it said that the 410 can't compete on midrange at all.
The difference between the PH speakers I have, and the 410HLF speakers I HAD, was like pillows were stuffed in the Ampeg. No doubt, it's loud, ballsy, and deep...but it's...dark...
My experience with those brands is that the Ampeg will be lower, darker, more rumbly and punchy while the Mesa will be clearer, more hifi and more detailed in the mids. I would definitly get the Mesa - it would obviously match with the bigblock more than the Ampeg could.