Comparing the JB 4367 to JBL 4349

In my search for a horn loudspeaker that sounds full bodied, rich and dynamic at listening levels of between 50 and 55 dbs I have 2 speakers that I am looking at:

1. JBL  4367 which is 37 inches high x 22 inches  wide x 26  inches deep   

2. JBL 4349  which is 29 inches high x 17 inches wide x 12 inches deep

My room size is 18 feet by 11 feet with 8 foot ceilings.

Has anybody heard either of the two and can my room size accommodate the larger size speaker without overpowering the room?

Thank you.