And HELP! PLEASE! Disappointingly, we have not found a way to adjust the BOOMING bass on our new Soundlink Color Bluetooth Speaker II. How, if possible can it be adjusted? The bass is so strong that we really can't enjoy the speaker. It drowns out the melody of most songs.
I am very sorry that you are dissatisfied by the bass response of your speaker. I would like to do what I can to help.
I would firstly recommend that you factory reset your speaker.
Power on your product
Press and hold the Power button for about 10 seconds until the Bluetooth® light blinks blue and a voice prompt instructs you to select a language.
Following this, I would move the system away from a wall or corner, or placing the system on or near soft surfaces this will help decrease the bass response. The system's tone characteristics change depending on location and environment.