Can anyone explain to me why an imaginary labour rate must be applied to a DIY speaker? All kinds of figures have been tossed around, but since none of them are "real", nobody can agree on what the proper rate should be. How is stating the labour cost to be $0 somehow illegimate?
If a commercial operation built the Statements and had to charge $3300, in order to make a reasonable profit, does it make the speakers 3 times better? No, their performance would be no different.
If Jin wants the performance of the "best" $10,000 commercial speaker and is unable/unwilling to pay that much, is it somehow wrong to build some himself? Of course not. If his speakers are independently evaluated and confirmed to be equal or better performers than the $10,000 commercial speaker, is that not legitimate? It's not a slight against the commercial speaker. We all know they have to include their non-material costs and include a profit. Nothing wrong with that. The fact that he paid $1100 to build them, is completely incidental to anyone but him. He is out-of-pocket $1100. Period.
Of course, it could turn out that an independent evaluation determines that they aren't as good as the benchmark $10,000 commercial speaker.
Maybe they're only as good as the best $5000 speakers. Does that make the statements junk? No, of course not.
The question posed in the article is "Can you build better than professional designs?". That's actually a pretty vague question. If I slap together a pile of junk and sell it to some poor schmuck, does that make me a professional? Nope. Would it be easy to better the performance of a typical Bose product for the same or less money? Probably. The question isn't "can you build better than the
best professional designs". That gives the DIYer a lot of leeway.