OK so a tweeter does fantasic in the 10K-20k hz range, We all agree, no issues here
Now lets go to 5k-10khz. again, no issue here, tweeters are fantasic in voicing these fq's.
OK, now lets try 3k-5khz. Not bad, but again not great.
Lets move on to midbass.
20hz-100 hz, Yeah here is where a midbass rocks N rolls beautifully.
OK 100hz to 500 hz, Again no problem, All midbass woofers work wonders in this range,. OK now 500hz to say 1500 hz. Not bad, but not great either.
That leaves a massive gap of 1500hz through the 3500 hz band width that all xover type speakers are struggling to voice, go ahead and crank the vol up to compensate.. Now you have the amp stressing out, and the 2 end fq ranges will be more voiced than the 1500-3500 hz's.
As you push the vol pot, all you are doing to adding stress to amp and speakers.
This causes distarotion and coloration.
Low efficiency = in effective, IOW flawed.
A tweeter was never designed to carry 2k-3500 fq.s, neither a woofer the 1200-2500hz.
The manufacturers have led you on to believing things that just are not true.
IOW you have been coned into drinking snakeoil.
The higher you push the vol pot the more stress is now polluting the sound, This is why Troels Gravesen installs so so many xover comonents to attempt to make these gadgets work like a high end FR works.
Won't fly.
Both speakers are only made to voice the 2 extreme end fq/s. The mid hz's can only be voiced by a speaker that is engineered to voice these fq band width width HIGHER SENSITIVITY.
xover speakers MIGHT SEEM to sound nice, but in real time reality they fail the test next to a high end FR.
I was convinced my Seas Thors were the worlds best sounding speaker,,, till a cheap FR came along and knocked the Thors off their stands. Now they are gove, Broke down to parts, sold some parts, kept the caps for use in tweeters for FR design and cabinets, out for the trash.
Once you've heard a FR, you will end up following my same path to true high fidelity.