JBL 4349 at low listening levels.

Jbl 4349 is for like 90+ dB listening levels.

For 50-55 db, get some hifiman headphones.. or get some niche in-ear earphones and stick it in your ear (small drivers/associated impulse response, clarity, detail, etc should work well for 50-55 dB sleeping levels). One thing to watch out for is that snoring levels may easily exceed the 50-55db and drown your music.

My question is do the JBL’s 4349 play full bodied and dynamic at around 50-55 dbs?

For 50-55 db, get some hifiman headphones.. or get some niche in-ear earphones and stick it in your ear (small drivers/associated impulse response, clarity, detail, etc should work well for 50-55 dB sleeping levels). One thing to watch out for is that snoring levels may easily exceed the 50-55db and drown your music.

Will the helpful advice ever cease?

I  have a pair of 4349s and they do very well at low listening levels. The 4349s are hybrid horns, the bass unit is a traditional 12 inch cone in a front-ported enclosure. LF horns are not typically compact nor are they inexpensive unless you are building them yourself.Klipsch La Scala is about as compact as you will get there, the Klipschorn and Jubilee are very large, Horns units from Avantgarde are difficult to source and large, but some are available with a sub and can occasionally be had used.. One solution I have seen is to put Klipsch Heresy on a stand, which would present the two horn elements at ear height.