Glasswolf ive been listening to my abc box various ways and am intrigued with the positive and negaatives of this box but I was curious why you called the abc box an aperiodic box because the way I understand that type is that you basically matt the front of the subwoofer and enclose the rear the way you do it I think anyway Im will to learn from your vast knowledge depth
ABC if it's what we're both talking about is a term coined by someone, I forgot whom, in reference to an "aperiodic bi-chambered (abc)" box, which allows you to tune the enclosure to two different frequencies.
it's really not an aperiodic per se.. not like the one I use, which uses a resistive membrane to control driver movement, but that's the term coined for the box.