One very overlooked company in the US that sells 65% of their speakers to studios for their musicality and accuracy are Amphion .I have their S3 monitors all seas drivers and excellent tuned
rear radiator That is balanced tuned to the front driver, excellent bass for a monitor ,their bigger models even better bass li use the excellent SVS 3000 sb subs with them below 50 hz Xover ,but these monitors do low 40s and no port to color the mid band. I upgraded the Xover as I do with all my speakers . The tweeter wave guide matches the 6.5 inch mid,bass driver . It’s time alignment makes it very easy to blend into almost any room with little work.