JBL 4349 at low listening levels of 50-55 DBS

[1065tax]

Looking at the JBL 4349 and wish to know if anybody owns them and will they sound rich and full bodied at 50-55 dbs? The retail for $8400.00 per pair. I am in search of a speaker that excels at very low listening levels. I was advised that horn loaded speakers might work well in this regard. The reason I listed the decibel level ranges because low level listening means different things to different people. The is an extension of a previous thread but wasn't sure how to amend or add to the previous thread. Thank you for your consideration.