Some of you maybe noticed, that the sound of the corebook x is not really great, but after seeing a teardown of this machine, I realised, wait those speakers are pretty big, compared to what they sound like. So I searched for an easy solution, tuning them, without any battery compromises and CPU load and found this:
Equalizer APO, a lightweight solution for equalization. I chose those settings and have to say, the listening experience is night and day. I hope this helps some of you, who want a bit more.
The sound will also be louder, but I don´t know, if this is hurting the speakers in the long run, but since I don´t hear no clipping, etc. I guess not.