Big Jeff Audio shipped very quickly however the product itself is poorly designed and poorly tuned. First off, the product claims 36hz but after doing a frequency sweep I noticed it really peaked between 40hz and 50hz. Quite a bit higher than most music I play so that was a huge let down. Second issue is SO MUCH PORT NOISE. It makes so much port chuffing that I thought one or more of my subwoofers were leaking air or blown. But after opening the rear door and listening to the port, it’s clear as day that the port was poorly designed and doesn’t deliver air properly. Thanks to Big Jeff Audio for shipping quick but I’m very disappointed in King Boxes that I spent $300 (after tax) on an enclosure that’s out of tune and chuffs worse than any ports I’ve ever heard.
Time for a custom built box because prefabs just don’t do the trick anymore.