Those of u who have done it, what did you find worked best? what size/tuning frequency?

Ideally I have around 30hz in mind to tune it too, maybe 2 cube box.

Thoughts?

Anyone?

Recommended ported enclosure for best all round performance is a 2.55 cu ft box (65.025 l) with a 15" long port 4" in diameter. This will give a box tuned to 28hz and an f3 of 18hz in car. As with any ported enclosure you should use a high pass filter. If you would like a slot port design that Eric at ID has sent me PM me and I will email the PDF'd drawing to you.