A:AnswerHi Elias,
The volume will come out from all the speakers, however, there's no specific option to adjust the bass. Adjust the volume using the supplied remote only.
Thanks,
>Joffrey
A:AnswerPlease check "Calibrating the Appropriate Speaker Settings Automatically"
in the link below.
https://docs.sony.com/release//BDVN5200W_N7200W_N9200W.pdf
Thanks,
>Joffrey