Hi there Jamie, You are in luck i have an AD12 and my friend has 2! I will contact him as he built my cabinet as well as his own to the correct spec not to patronise you but there is more to it than people think it was worked out with maths to mm cubed!!! for the volume of the cabinet also the box is ported which is best for this speaker he use drain pipe for mine but depth, postion and thickness of the tube is important also mine does chuff a bit as is not an aerodynamic port which would be better if the spec is right,will dig out the info for you Kind regards Ed Moderated By: brian@diysubwoofers.org
