@millercarbon, astute observation above.
Learned this many years ago. Seattle audiophile club had a speaker building contest. Only rule: $100 parts limit. Not including the cabinet! Whole bunch of entries. Most truly awful. The top 2 or 3 were pretty good. Out of about 30. So DIY, real deal genuine DIY, is damn hard. What hit me was even the very best one was still not quite as good as some manufactured speakers you could buy for the same amount of money. And that was with the DIY given a pass on the most expensive part, the cabinet!
So clearly the professionals know a whole lot, probably more than we even can guess at. In other words a whole lot of design went into that kit you put together.
With any luck you totally got your money’s worth out of the experience. You got to see first hand what goes inside, and all the details of how a speaker is put together, and just how much work it is even when someone has laid it all out there for you.
We take it for granted, but its not easy what these guys do. Not easy at all.