Such question often comes up in many many forums, not just audio related.
No, they are not overlooked. Rather, the pricing and profit margin limits what engineers could put into a pair of speakers. In other words, COST.
Raw materials and manufacturing process actually makes up a small fraction of the overall price of the speaker. Eg. for a pair of KE R3 speakers, the selling price is around USD2000. I won't be surprise if the manufacutring cost is just around $200. If you ask what happens to that $1800?? Easily 1/3-1/2 of it goes to the dealer, the rest will be like shipping, marketing, R&D cost. KEF also need to feed their staff, dividends for their investors etc....
A set of Gaia feets cost around USD200. Even if isoacoustics sell it to KEF for just $30, its still a significant portion of the manufacturing cost. And, its just speaker feet!!
If you wonder why delaers need such margins, speakers are not supermarket items or gadgets where they just fly off the shelves. Dealers will only push your product if the margins are worth while for them to do it. Else, they don't.
Btw, check out the crossover and internal wiring of the KEF R300. I think its not that difficult to estimate the cost of the components.
Is the Klippel system able to measure individual drivers and port ?? If one driver can be separated from the rest, sure. With the port, that is not possible of course. If all people are doing is sticking a mic at the port and running the sweep, I can do that as well.
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