Need more heft


In the market for floor standing full range speakers. Would appreciate recommendations up to $4K. 
Current rig:

VPI Scout TT
Lyra Delos MCPass Labs XP12 pre
Pass Labs XP17 phono pre
Pass Labs XA25 ampZU Audio Soul MK 2 Speakers
ZU cable
Love the mid range and immediacy of the speakers but they have no heft or bottom end/bass extension which is what I am seeking. Not interested in adding a sub. 
For reference, I’ve researched ZU Omen Def MK2, Kef, Focal, Klipsch Forte 3 and Heresy 4, JBL L100 and Golden Ear. 
Appreciate your feedback in advance. 
asp307
if you did nothing else and got the Klipsch Forte III you would have much more heft and weight.  recommended based on hearing them.  
hi I have a pass labs xa25 amp on my jbl 4435 studio monitors they have heft and weight in the bass to 24hz the MIDS and highs are great to do not need a sub woofer bandaid I had jbl l100 cut @45hz I all so have jbl 4425 monitors cut off @45hz all so.for reference bass is the speaker not the room the room can get in the way yes
I have a pair of JBL L100 Classics and also have a pair of Kef R3s and both are spec'd to go down to 40hz however the bass is much more ever-present with certainly more heft and presence with the JBL's. They are very different sounding speakers and both excel in different ways but I like the JBL's more overall.  People say the JBL's are a fun and entertaining speaker and I wholeheartedly agree.