How to find bass in sayona pps SHT-1173Bt

"A thread" in Internet forums like this one is a sequence of questions and answers. What you have started is a thread, and probably more people will join to provide their input.

It seems you're asking how to "improve" the sound of some totally unknown sound system. YOu will better ask this question in your own language, in forums hosted in your country (or where this system is sold).