Horn speakers , high efficiency but not “shouty”


I am interested in a high efficiency horn with SET AMPS, in a 12 ft by 18 ft room. 9 ft ceiling .
I have narrowed my choices down to Charney audio Excalibur http://charneyaudio.com/the-companion-excalibur.html
and rethm maarga v2
https://www.google.com/amp/s/audiobacon.net/2019/04/18/rethm-maarga-v2-loudspeakers-listening-sessio...
would appreciate input from any one who has heard the above speakers or someone who has a similar system . 
listening choices are vocal music , no classical music.
Very rarely might want my system to play loud party music .(extremely rare ) does not have to play it like solid state system. Thanks in advance 


newtoncr
I needed some hi eff. speakers for my 6 watt Grommes amp.  Found some Klipsch Quartets with crites XO and Ti tweeters.  Not shouty, does sound more like live music than my other setup (4 watt with de Capos).  We listen for hours, no issue with fatigue
I challenge you to A/B your horns with any model of Magnepan speakers and see if you still want the horns. Listen especially to voices and "quiet" instruments.
I've been doing this for several decades now. I like the Maggies if you have the right amp with enough power and decent speaker cables. But they are not as fast or as revealing as my horn system (Classic Audio Loudspeakers model T3.3 with field coil powered drivers for the horns).


Field coils bring speed to any driver that uses them. When you put power through the voice coil of any dynamic driver (and this includes Magnaplanars) the magnetic field sags as the current is increased. Maggies don't sag as much as some other drivers as things are spread out. But its still audible. Field coils allow cone and compression drivers to have the same speed as ESLs and really for the same reason- a power supply is running the motive force.


As far as 'shouty' goes, this is an artifact of distortion. Horns can exhibit it if the throat interface to the mouth of the horn isn't designed properly. These days with computer optimization that really shouldn't be an issue. But the other thing to keep in mind is that older horns are meant to work with amps with a higher output impedance. If used with an amp of lower output impedance it can throw off the crossover point. If the driver starts operating out of band it can make additional distortion. Because the output impedance was highly variable in the old days, older horn systems usually had level controls on the midrange and tweeter to allow you to adjust the speaker to the voltage response of the amplifier. Most people think they were there to adjust to the room but that isn't how it works.
I don’t see horns in either of those two examples. What am I missing?

I’m old school. I have been living with Altec Lansing 604Cs for 44 years. 101db efficiency, 16 ohms, driven by Futterman OTL3s converted to triode (eight General Electric 6LF6 tubes per bloc).

The Tannoys are similar.