Hi Kevinsonic, I agree with most of what’s been said.
I have a pair of passive 15” cheapies with 1” throat compression tweeters:-
View attachment 464842
They sounded horrible, boomy without deep bass and probably measured similar or worse than this
Behringer B215XL LCR Review
www.erinsaudiocorner.com
I tried an experiment with nothing to lose by stuffing them with a full sized polyfill pillow each, and then sealing the bass ports. What a difference that made! For classical, jazz and acoustic, they’re my favourites now.
Their bass is very recessed but goes really low to at least 30Hz in-room and most of the boominess is gone.
Can use a sub or equalise them up to a certain point. Their efficiency gives you a lot of headroom for eq.
With the tweeter handling from 1kHz to the upper limit they image like Kef LS50’s and do depth and width incredibly. There is such a sense of immediacy and coherence that I never seem to hear out of 3-ways. Maybe that’s just been my bad luck though.
Percussion, kickdrums, cymbals and triangles are so lifelike with no detectable compression at low or high volumes.
The big caveat is their crappy dispersion, being ‘controlled directivity’. If you sit in front of them in your main listening posn, bliss!
Get up and walk around and they sound mid-range-recessed.
If you value a sense of timing, perceived explosive dynamic performance above flat response, then they’re worth an audition. I love them for that and their ability to sound like a live venue performance.