If your sitting blindfolded in a listening area the areas in blue are an approximation of where the sound seems to be coming from in relation to the single speaker.. This is very general, as bass goes lower it is very hard to localize, we might have to color the whole listening are blue.

Most of the time when this happens its simply because the installer wired it up wrong.

The IN CAR imaging is likely way more complex than these drawings indicate, but hopefully it will give folks a foundation to build their own experimenting with.