If a " system " cannot do this, I move on........

@mrdecibel , of course the effect is source limited. Some recordings, the minority are capable of supporting the "live" illusion, most are not. 

Horns, as big as they can be, are point source radiators. They produce a miniature sound stage just like any point source radiator. They project power just like any point source radiator, the volume rolls off at the cube of the distance. Linear arrays loose volume at the square of the distance, much slower. They produce a large, powerful sound stage. 

You do not want to ruin your ears with 110 dB but you can get the "live" effect at 95 dB just by boosting the bass a bit, 3 dB/oct below 100 Hz. But that has to continue down to 18 Hz, real in room measured response. There are many instances where the sound of a great home system is superior to the live performance especially where large venue concerts are concerned. 

Right at this moment there is only one full range line array on the market, the 8 or 9 foot Sound Labs ESL. Most people have the impression that ESLs are wimpy, easy to damage, lacking in dynamics and incapable of louder volumes. While this is certainly true of early Quads it could not be farther from the truth when Sound Labs are concerned. All you have to do is give them the right power and pass off 100 Hz and below to a subwoofer and you can go way louder than is safe. 110 dB is no problem. Dynamics are also not a problem. Nothing produces the snap of a snare drum like big ESLs. On Mechell Ndegeocello's Peace Beyond Passion the snare drum must have been recorded with the mic two inches away. That snap is thrilling to hear and sets the rhythm of each song. What a great record. "Jesus cured the blind man so he could see the evils of the world."

Even the visual sensations can be produced at home now. The Blu Ray of RTF's "Returns" is a great example. You can see as well as hear the concert better than if you were at the actual performance unless you were lucky enough to get front row seats. My own popcorn and a bathroom are just a few steps away. Parking is free!

I am pretty sure you can get similar performance from any type of loudspeaker. The trade offs would be size of the sound stage and the amount of acoustic treatment required to kill the room's signature. Horns are not a sure fire way either. Very few horn systems entirely lack that horn signature megaphone quality. The horn's most significant positive qualities are their efficiency and limited dispersion. 

Aren't there more comments from the community?

[Klispch Lascala's II with Raven Blackhawk, Yamaha S2100 CD player, full Tellurium Q Black II cabling, fully tweeked by Mad Scientist Nano thangs] Once upon a time....for me it all goes back to one afternoon I sat on a friend's bean bag chair and listened to Cat Stephen's Tea for the Tillerman in a tiny basement room. I'm sure the entire system didn't exceed $1000. Bookshelf speakers ear level (Advent?) created the quintessential 3-D sound stage that transported me into an alternative sound environment that shocked me. It was at that point I became an audiophile "wanta be". My goal ever since has been to recreate this alternative realty which draws me into this musical world. Today my humble system transports me into this wonderful, amazing world I float effortlessly within. For me, therefore, it isn't about anything but my system's ability to replicate a 3-D, immersive audio picture I can nearly walk into like a portal to another place.  Poor bass, or weak imaging, or misplaced emphasis on any part of the sound spectrum or simple distortion or smearing of detail hinders my goal. Recording quality or lack there of will likewise hinder this focusing of the portal's entryway. All's servant to that goal.