I got the speakers this morning and hooked them up to the Pa4X. WOW! what a sound! I could not believe the sound from such small units.

There is no comparison to the sound I was getting from a pair of EV ELX112P. The sound is so much louder, cleaner, and punchier.

So far, these definitely are an upgrade over what I had.

How is that possible? EV ELX 112P is rated 132db SPL and 1000 W RMS ?!?

People nowadays get way too much hung up on numbers.
They really don't mean the same anymore as they did a few years ago.
The numbers can't really tell the full story of how a piece of equipment really behaves in the real world.
Technology has changed the game.
The only way to know is to try it for yourself.
Eric

Well, basically I agree, but: these ELX have a weight of 18.8 kilograms each, they are not cheap, and at Thomann.de all customers who bought them left excellent reviews. If these heavy speakers really bring out less power than the Bose S1, all this satisfaction makes no sense to me.

How is that possible? EV ELX 112P is rated 132db SPL and 1000 W RMS ?!?

No idea how to explain it! I am surprised myself to be honest.

Keep in mind, I am listening to these in my studio for practice purposes so, I didn't turn these up too high. I had the ELX setup at about 75% volume (anything beyond that the hissing sound was too much so never went beyond that). The Bose is setup at about 35% and it sounds louder than ELX.

These have a much punchier and cleaner sound as well.

Another thing I learned a long time ago:
I don't rely on reviews. People hear and see different things than I do. Plus everybody has different needs.
As a general direction yes, but I take them with a grain of salt.
I trust my eyes and ears and I know what I want.
Everybody seems to be an expert on the web these days
Again; if you can; try it for yourself.
Only you can be the final judge.
Eric

That's how I take reviews, too. Just as a general direction with a grain of salt as you say.
Luckily, in my region there are good chances to find instruments and speakers in stores to test them.
Still, I know a little about statistics, had to learn it in my first studies, and if a speaker gets such a high number of excellent ratings at Thomann, where only Thomann customers who actually bought the product are allowed to leave a review, it does reflect a steady trend about how good the speaker is, even if tastes are different.
These ELX speakers really seem to be roughly on the same level as a Yamaha DXR speaker, so it remains hard to explain how this Bose S1 Pro can compete against it.
Next time I'm in Cologne, I'll try to listen to it at Musicstore.