It is 6.5". It is the the exact dimensions for putting any standard 6.5" speaker in. I don't think there is room for a sub (if there is one that small) because the mounting depth is not very deep. It's been a while since I was back there but I remember a protruding piece of metal (or plastic?) behind the rear opening. If you want some good bass, just get a good set for the fronts and use the rear as fill to make the sound a little bigger.
__________________
-2000 NF Red
-64.6 LMPG
-JVC El Kameleon HU, JVC 12 disc changer, Infinity Kappa 3-ways up front and Alpine 2-ways in the rear
|