Regarding bass theme, I recommend a firmware update to perform.
Then let Automatically calibrating the device.
Then manual correction of the subwoofer (mostly) -10dB to 0dB for example (according to taste)
Distance was measured correctly with me (5,2m)
There are in manual menu the possibility to switch on a bass boost (after the automatic calibration, this function is always activated)
If you like to activate this manually.
Now you have additionally the possibility of bass and treble to increase the unit.
The alleged bass problem no longer exists with this setting.
For the price of ~ 700 + quality equipment is very good!