You need a t30 star screw bit to remove the door and a t25 one to remove the existing speaker.
Removing xk8 door panel.
First up was to see if i could remove things and route wires without wrecking my car.
Wind the window down.
You need to remove the inner door panel you will have to look for the screws holding the panel on at the arm rest area and behind the door handle were the door lock lever is you will have to remove the plastic cover then if you have power windows its easier as you don t have to remove window handle if its manual windows then there is a clip that must be removed to remove the handle its located.
This is necessary to get to the back of the radio.
So how to take the door panel off.
At the door jamb end remove a cover it is just clipped in and remove a bolt.