Hi, im wondering where is the location for back burmester speaker for the estate, it stated 13 speakers in the car but i could not find for the rear speaker, i can only count 11 from right rear door to the left rear door, seems like the rear speaker is missing

 

On the estate, one in dash centre, two bass in front foot wells, two in each front door, two in each rear door, two in roof in boot. 13

I find the ones in the rear doors and especially the rear roof to be so weak you can hardly hear them.