[tweeter on top! time alignment baby]

I'm sure you can hear the difference. I'm just saying is that the difference you hear is not due to the drivers being time-aligned and is surely not due to anything being more phase coherent.

 

There are very few speakers that are (at least reasonably) phase coherent & unfortunately most of them have limitations providing live SPL in all but the smallest rooms, limited low end response and typically beam at higher frequencies.

 

Once you've lived with broadband linear phase speakers for a while there's no going back. Everything else, regardless of price sounds "raspy".

 

As far as the Klipschorn goes, to bring out the best in them first and foremost requires a proper room and room acoustics suited to it. This is no small feat to achieve.

[tweeter on top! time alignment baby]

I'm not sure what you are referring to when you say "time alignment".

 

If you mean that the voice coil of the tweeter is in the same vertical plane as the midrange driver, that is not necessarily "time alignment". And beyond that, regardless of what you do with a Klipschorn to try and achieve time alignment between the drivers, be it physical or digital signal processing, you will still not have a linear phase (phase aligned, phase coherent) system. Yeah, I know, it's not actually possible to have a perfectly phase coherent speaker even with a single driver. But with a Klipschorn it's impossible to come even close. While time alignment and phase alignment are "related", they are not the same thing. A speaker system that has it's drivers time aligned is not necessarily phase coherent.

 

However if you enjoy what you're hearing that's great. That's the whole point, right? Just be aware that you're not actually doing what you think you are (time alignment). There' more to time alignment than just getting the drivers in the same plane or the same physical distance from the voice coil to our ears or measuring device. And just for the record I've already been through this exercise. Fun, yes (maybe?) but futile none the less.