Above shows the whole thing tipped on its side. That fibreglass you see is not really needed. The section it is in is completely closed off from the woofer chamber, its just wasted space actually. So it was probably a waste, but oh well - I got a ton of the stuff anyway.

Above shows enclosure with sides attached

Above shows box with sides and top attached.

Still gotta attach all this stuff to the other tower, then I gotta put in the lips for the back panel, as the top half is removable. Then all the odds and ends, like sanding down bumps, cutting and drilling holes for terminal cups + components, finishing etc.