So I've decided to design a fourth order for 2 xfl 10's. Sealed chamber will be 1.7 cubes ported will be around 3.5-4. I'm just not sure how much port space I'm going to need. I know the 12-16 rule on ported but it's more on a 4th. Not real sure on tuning either , looking to hit the low 30's with some stank and play up into the 60's nicely.
