I found some Kenwood 6" x 9" speakers. I thought I'd see if they would fit into the rear panel. I've seen that lots of other Copen owners have fitted speakers in this area. Stripping down the panels. First you need to take the wind defletor out. Get a small srewdriver & pop off the top cover. Be careful as they are easy to break. All the panels pop off, first is the centre piece. The white bits are the snaps. Then lift the rubber grommet around the hoops up. Then pop off the panel.