Given your specific comments on mid range and lack weight, would that not be what one would expect if a woofer was a dome rather than a concave cone? Which is effectively what that gigantic dust cap turns that woofer in to?
The dome offers dispersion for those high frequencies, aided by how short the wavelength is for 5 digit frequencies.
I'm thinking outloud here trying to make sure I understand everything I read about design. And applying it, so please correct me!
I don't think it is so much the dust cap - it has a big voice coil. The inside woofer frame
is not big - it looks to be one of those that go inside a thin flat panel speaker. For the
price, you even get a cast frame woofer. You can not see the spider, because it has a
medal circle frame around the inside. A unique built woofer.
All in all it just lacks resolution - There is no real texture, layering and depth. I will call
it a weak sounding voice coil - and there is not much air with the tweeter. I reversed the
polarity with the input terminals and it did not really help.
A crossover change can help the overall sound - however, I do not believe that it will
really add that much to the resolution.
It is not bad, bad - it is just a fair sounding $50 speaker pair, for the non-critical ear.
Measurements do show some harmonic distortion around 1 khz