just finished drawing up the designs to my sub cabinet. My EGO's will sit on top of these and use them as stands. I will be using a HE12" driver that has yet to be determined. The net volume is 61.5L and it will weigh about 60lbs for just the MDF. Here is the link to the design. http://beyond_gomer.tripod.com/subbox.html let me know what you think.