you jumped in to say bad things about the Chroma, Roy and GMAI wish i had seen threads like this before my purchase. Look, GMA make speakers which are divisive. I will not apologise for saying i hated their sound. It is the absolute truth.
Why would I lie? if I loved them why would i say theyre horrible?
Ive owned PMC, B&W to name a couple and they were a fraction of the cost of the GMA but the GMA did not sound better it sounded (far ) worse.
Now as far as the other points i made about cheap parts, thick cabinet walls, no chamfering, lobing, if you dont agree, then attack the points I made, dont attack me.
4th order crossovers are HARDER to do than 1st order not easier. They require more parts and each has to be chosen to within a tighter tolerance than wit 1st order.
And GMA say that they are 1st order but their tweeter is rolling off at 2khz so obviously its not going to be first order below 2khz once you add that roll off onto the natural rolloff. There is also no impedance correction on the tweeter so at its resonance you wont be getting much attenuation there either. The 14cm centre to centre distance between their drivers causes lobing at all frequencies above 1.25khz. (1.25khz is the frequency such that half of its wavelength is 14cm.)
Clearly with a first order crossover the only way to avoid lobing is by using concentric drivers
https://www.madisoundspeakerstore.com/seas-soft-dome-tweeters/seas-prestige-27tdfc-h1189-textile-dome-tweeter/
You can see the rolloff at 2khz