My aim with this next cabinet design, is to remove the cabinet 'sound' from the equation as much as possible.

Despite my attempts at damping the current cabs, the ol' knuckle rap test shows there's still significant resonance in the lower part of the enclosure where the panels are bigger, and unfortunately, this is of course where the critical mid-bass driver sits.

At least I'm lucky enough to be totally happy with the aesthetics of the cabs otherwise:

http://i682.photobucket.com/albums/v...s/P1010202.jpg

which means I can concentrate on getting the construction right this time.

I will be adding two bracing 'hoops' horizontally within the section below the mid-bass, which will stiffen front, back and side panels.

The other thing I will do is to borrow an accelerometer and oscilloscope from an engineer friend and do more scientific testing alongside listening tests.