Dali Oberon on-wall - installation height

[LOOK_PL]

Dali Oberon on-wall stereo speakers work with the REL-T5 subwoofer - connected to Yamaha RN-803D. The whole thing sounds very good in my opinion, the problem for me is that the Dali speakers are mounted too high.
I'm thinking about switching to the Sonos 2x Five + sub system - will it sound better? Due to lack of space, I cannot place floor speakers.

I'm asking more advanced users for advice.

 

 

[krass]

is there a technical reason you can’t mount them lower ? (eg centre the TV and move that small box ?)