Regarding the Aerials, they measure razor flat and cabinet resonances are particularly well dealt with via 2" MDF cab sides, non-parallel isolated, wool-filled driver chambers, constrained layer dampening blocks, extensive cabinet bracing, etc. Aerial pays particular attention to that issue. Have you auditioned them?
Unfortunately, dealing effectively with cabinet resonance by simply using thicker material as the variable is not efficient. That is, using 2" MDF actually has not that much better performance as compared to the standard 1" MDF used in that price class of speaker. BTW, Stereophile measured this speaker, including the cabinet output relative to a fixed voltage input. Now, consider this speaker is 6dB less sensitive than the average speaker, and that Stereophile does not compensate, and the wall reading would actually be 6dB higher than it appears in the graph, and other resonances would also show up if the response was compensated, if compared to another speaker with average sensitivity. The speaker has a little bit lower resonance than average, all things considered, but not much better performance than average. My speaker building techniques, for reference, would not yield any reading on the Stereophile cabinet resonance graphs, as my cabinet methods yield 20-30dB lower cabinet output, as compared to typical cabinet building methods. This would be using simple methods, one example being a 3/4" outer ply cabinet, with a 1/8" to 1/4" thick constrained dampening channel, with 1.25-1.5" thick solid oak(chosen for stiffness) adhered to this, with internal bracing on all axises, spaced no more than 3" radius from any other secured point. Th combination of very stiff layer, super dense bracing, and the constrained dampening layer results in drastic lowering of cabinet wall vibration/output. If I had, for example, left out the constrain layer channel and used typical bracing, the output reduction would not even be half as effective.
-Chris
