For the last 5 years my 6x9 's have been mounted in the bottom of my doors on my full size van. The cone aims directly at the back wall of the step. When I open the doors, volume and sound quality increases. I want to angle the speakers upward, over this step . I'm thinking that this angle might put too much stress on the speaker when I slam my old crusty doors.
Should I avoid this angle and just put them back the way they were?
Or are the speakers strong enough to handle being slammed off axis with the door?
Any input welcome