Years ago I saw Willie Nelson, Asleep at the Wheel and Ray Wylie Hubbard at the Brown County Arena in Green Bay. I'd been to other concerts there, and it was usually what you describe...boomy, echo'y, with guitars, bass and vocals muddy and indistinct. But this night, the sound was crisp, clear with every instrument and voice distinct and large. I walked the entire venue, and there wasn't a bad sound in the arena.
The PA was mostly Karlson cabinets...an old design many decades old, and various treble horns along with some smaller mid cabinets. The volume was high, but all was clear and distinct. I remain impressed as the quality of that concert exceeded most of what I've seen since, soundwise.
One of the best, no, make that THE best sounding/mixed show I've ever heard in my life was the Willie Nelson, Merle Haggard, Ray Price show here with Asleep at the Wheel opening. Imagine hearing tone and nuance from an upright bass in a concert venue of a couple thousand people with big PA stacks, subs and all. Pretty much ruined my enjoyment for a lot of other concerts I've seen.
More props to The Cult. Saw them twice this year, great sound both times. That's what a rock band should sound like.
Granted all those were outdoor shows. I've had so many bad experiences and wasted money going to arena shows I just plain don't go to them anymore. For all the reasons described here, boom, woof, clack, mud, unintelligible vocals, etc. These guys are too of the line pros with million dollar systems and still don't get it right. I don't see how, but it happens all the time.
The other arena show I did see with a good sound was the Crosby, Pills, Hash & Young show from a few years ago. Great sound crew, and their music lends itself to a little cleaner, more "open" mix. Even Neil Youngs harder rocking songs with overdriven guitar, etc. sounded good.
I've come to think it's obvious great sound can be done, most just don't take the time to do it.
Same deal with Aerosmith. Saw them twice. Once outdoors, great sound. Once indoors. Sounded like being inside a giant clothes dryer.
I don't get it. Most of these are top level acts. They have to know they're coming across this way....or do they. I'm sure it sounded good at the mix position, but what about the rest of the venue? I've seen a select few that sound good everywhere.
The running without subs thing might be a good fix for some of this, but, the subs in and of themselves aren't the problem at all. Problem is running them 10 - 20db hotter than everything else and putting way too much bass guitar in them.