Lower volume of subwoofer
From Samsung:
Most soundbar remotes have a button labeled WOOFER that can adjust the level from -6 to +6 (when compared with the volume of the rest of the sound from the other speakers). If your remote does not have this button, see your user manual for instructions.

Additionally, can you trim the other speakers up?
Also, the acoustic effects of placing a sub in a corner or enclosed area increase frequency buildup via standing waves(think singing in the shower).  If it's placed in a corner, move it out a foot/.3ish meters away from the wall/adjacent hard surface.
If it is downfiring(speaker on the bottom), you can flip it over...
Just trying to rule out environmental issues first.