Has anyone disconnected/removed the dashboard speakers from their system? I don't think they provide a very good soundstage and am thinking about going for the more standard 4-corner (2 front, 2 rear) speaker configurations. Center channel speakers are great for dialog on home theater systems, but I think they detract from music.

I am curious if the bluetooth output is wired solely to the dashboard speakers and if I would lose the ability to hear telephone conversations if I pulled those speakers out of the system.

Any input?