It seems obs/occ is another control layer on top of attenuation. It directly uses the position and the relation with the environment to work. In Wwise 2019.2.0, obs works for roomtune event on room component, and occ works for common game object. I guess you want to have the music with 3d position but not obs/occ, right? If you are using Unity, try to remove the 'ak room aware object'/Collider of the gameobject you play music on. In this way, the music is a common 3d music without spatial feature. If you want to use the room and portal stuff to relocate the music, set the 'Wall occlusion' of the room component to 0.