The idea is to build a sub in a small, non-ported box, instead of the huge ported beasts most people use. This makes its response roll off at (IIRC) 12dB/octave with decreasing frequency, but you can ...

Quick backstory: I was expecting to have a big subwoofer build thread by right now, but that project is mostly put on hold for a couple of months. It's pretty close to complete, but this project got ...