I've got a small RAV4, and the 6x9" wouldn't fit anywhere, so I build a custom MDF box for them to fit in the rear storage places.
I'm wondering whether by putting my 6" or 6x9" in a sealed box, could this box be too small? If the box is too small, and the cone is under too much pressure to move, could they overheat and burn out?
Note: The reason I put them all in a sealed box was because without an enclosure, when I turned them up the cones would hit their excursion limits.
Here is the setup with all the rough dimensions:
2100 cm^3 = 128 in^3
1178 cm^3 = 72 in^3