BEST HORN LOUDSPEAKER TO PURCHASE

I am a 73 year male with normal hearing as per my  ENT doctor.  I am comfortable  listening to music at  50-55 dbs, with occasional peaks of 60-62 dbs.  Looking for the music to sound alive at these levels. Did some acoustic treatments, purchased an equalizer which did not help(workaround of Fletcher Munson Curve). Finally I made a change and purchased a pair of JBL 4349 horn loudspeakers, which is a 2 way speaker with a horn midrange and a large dynamic woofer.  Sensitivity was 91. I was able to get full bodied sound at lower levels, but the bass driver did not wake up until  70 decibels. I have 2 SVS subs, the DB4000. I  adjusted the cross over and volume which improved the bass.  When I put my ear next to the bass driver of the JBL at 50-55 db there was very little bass to be heard, in a piece that had substantial bass . This is my den system. I now firmly believe that a horn loudspeaker is the best way to go.  My main system consists of 15 year old Vandersteen 5A's, Thor Audio Monoblocks 150 watt tube each side, and a Thor Audio linestage.  The Vandersteens are absolutely wonderful speakers, featuring built in subs. You get top to bottom sound that is full and rich,  but not at comfortable listening levels. Uncomfortable levels lead to ear pain.  I have tried and tried, but in my system the Vandersteens require about 70 DBS to come alive.  I have been researching and I believe I need a high sensitivity. I have been thinking about the Volti Audio Luceras. My budget is $15,000 per pair.  I've watched Greg of Volti speak on You Tube and he seems to be perfectionist and seems to really know his business. I believe the Lucera has a 99 db, which should help the dynamic bass driver come alive at lower listening levels. I also believe that the sound will be rich and full bodied at my listening levels. Has anybody heard or own the Luceras?  Would be interested in anybody's thoughts. Thanks for reading and responding to my question.