Originally Posted by ckirocz28 View Post
I think Zardnok really hit it with aperiodic membranes.

Pretty much this, but if you have enough EQ, a lot of excursion and a lot of power you can seriously undersize a sealed box. People will debate if you can hear the difference between a high Q box and a "nomal" box, but pretty easy to try out since you can just add scrap wood to a regular sealed box to try it quickly.

Winisd will let you know how much excursion and power you need for your desired listening level.