How to change the bass, treble sound effect on the Bluetooth speaker?

How to change the bass, treble sound effect on the Bluetooth speaker?

For all devices you need to go to the settings > playback Equaliser  of your chosen music medium source 


Examples:

Apple Music  - Settings>Playback EQ

Spotify - Your library>settings (right hand corner)>Playback>Equalizer 


For Alexa connected devices it very simple:


"Alexa. turn up the bass" or "Alexa, set the bass to maximum"

"Alexa, set treble to 6"