@mrdecibel, Nice description of what many of us heard as teenagers when our listening preferences were being formed. The sound of Altec and Klipsch horn speakers in the 1970s is what did it for me.
As many have pointed out, Klipsch speakers in particular really benefit from upgrading their stock capacitors. They have also made some improvements in their Heritage line over the years. However, I can’t say I like the sound of their “modern” tower speakers vs. their old school designs. Again, personal preference, but even they have proven not all horn speakers are created equal.
Recently, I finished a modified Altec Model 19 project giving the 416A woofer its own reinforced cabinet and tried new and old compression drivers and horns to find the most enjoyable combination. So even if you’re in the horn camp, there are different flavors for your own preference.
Trying different capacitors in Zilch’s Z-19 crossover actually surprised me as to how much it could change the sonics of the speakers, for good or bad vs. what I was looking for. (But this is for any speaker, not just horns, though they tend to reveal the differences more.)
But it’s not just the electronic altering of the recording that engineers use to get a certain sound, it starts with how the room is setup acoustically with room treatments. I would suggest that horn speakers are more in need of proper acoustic room treatments to sound their best, especially in reflections points between the speaker and listener.
Engineers also affect the sound with the instrument or vocalist’s position in relationship to the microphone. Given the horn’s by-design directed sound distribution, their placement in the room and to the listening position, especially toe-in, also seem to alter their sound more than all-cone speakers.
That said, I’ve heard capable horn speakers sound bad when the room, placement, etc., is not set up correctly. I’d even say they can be made to sound worse than a non-horn speaker in a poorly prepared listening environment. This could be why some people are anti-horn.
So, while horns may need more attention to detail to sound their best, the rewards can be as you described. Thanks for reminding us it’s about enjoying the music.