Both my PE 12"DVC and Shiva came that way (both made by Eminence). I think it would take an "agressive" carrier to do damage.
PS: I did find out why I thought your vent was on the short side. My enclosures are in the 90-100 liter range. Your larger box, would use a smaller one. I'd still make the tuning check after getting a new driver.
PS: I did find out why I thought your vent was on the short side. My enclosures are in the 90-100 liter range. Your larger box, would use a smaller one. I'd still make the tuning check after getting a new driver.