I had mine tuned to 43hz because i didnt have long enough ports.
It was pretty loud, you can ask dalucifer, JAZN and ighettoboyi how good it sounded and how loud it was tuned that high //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif
I have plans for a bandpass design from 80inches for it as well