Design details? Most of that is marketing gibberish designed to sell speakers. As to why I think they're not, the evidence is abundant. If the speaker can't even measure properly in a free-field environment, how the heck do they expect it to measure 65-25khz +/- 3db in the average room? I keep asking: Are they incompetent, or did they do this intentionally? Which is it? You can't argue that they're competent when the speaker measures poorly.
The owners probably tell their engineers what they want, and keep asking them to make adjustments until they're satisfied with sound. Something that stands out. Something that will sell.
I'm not sure why this is difficult to conceive, unless you're arguing that they really aren't that good at engineering speakers.
Design details like offering tweeter level adjustment resistors is marketing gibberish?
slanted baffle is marketing gibberish?
felt around the tweeter is marketing gibberish?
spikes to isolate the speaker is marketing gibberish?
solid baseplate is marketing gibberish?
wobbly on and off axis FR but linear in room response is marketing gibberish?
foam bass port plug is marketing gibberish?
If you make a whole in a box like this one you expect it to have a bump at 115Hz. Is it a fault if it do that when you expected it? It is a design goal. Will it be my design goal...no way, because I want to use the speaker differently. Most likely they choose this option as a best compromise for them when listening low and very low levels. It is a trade-off choice.
Same with the wobbly on and off axis and wide dispersion which give a dynamic and open sound. Probably what their customers were looking for.
I assume when listening to lower volumes a bumped up bass is preferred by many. And probably the lower the volume the higher up in FR the bump has effect. None of those bass curves are seeking accurate response, but finding the balance for listening enjoyment.
For those who dont want to use it in that way, they offer a foam plug to make it act as a closed box design and hence a response from 65Hz onwards. And you expect it to sound like the curve below. But it appeared that it doesnt measure like that. This I would call a fault. leakage?
I think we just don't get the concept that a 10k speaker is designed for playing some low level and background music. It's important to know the design goals before one can make a judgement.