I listed 12 speakers prior lolI think the rear doors are the same as the front, a full component setup. There is a grille in the same spot as the front door. Also, it's listed as a 12 speaker setup:
8 in all 4 doors (mid + tweeter in each)
1 in dash
2 in rear shelf
I know the MKZ has a co-axial speaker in each of the rear doors which is one speaker with a woofer and tweeter built in. Ford counts this as two speakers so my write up above should still be correct.
If the rears were separates (as the fronts are) there would be a tweeter mounted in a different location than the woofer. If this is the case, where is the tweeter grill located on the rear doors? I'd like to know for reference.
Also, the Sony 12-speakers has TWO 6x9 woofers in thelf, not one. The is a small centre channel speaker (about 4" in size?) on the parcel shelf between the two subs.