I need specs for polk DB12

[Bmwpower]

can someone give me some spec/opinions for polk db 12
And some box tips

[Kim]

The DB12 requires a small sealed enclosure volume of .88 cubic feet per woofer. They are not designed to be installed into a ported enclosure due to their high mass cones. Make sure that the enclosure is constructed out of 3/4 inch MDF and seal all interior seams with a silicone caulking.
A good crossover frequency is 80 to 90 Hertz and drive them with a amplifier that has a power rating of 400 to 600 Watts.

Thanks,
Kim