I'm not affiliated with Volti in any way either, but I'm just perplexed at what all the fuss is about. Mr. Roberts is certainly not the first to own a speaker company by focusing on the area of his expertise (cabinet making) and subcontracting some of the other work out (acoustical design). John Otvos of Waveform fame did exactly this too. Revel uses Kevin Voecks and many speaker manufacturers use a combination of in-house and contracted resources to design/test/finalize their products and then the produce them for market.
I too met Mr. Roberts at the 2013 and 2012 Capital Audiofests and he was a complete joy to talk to and took the time to explain how his speakers are built, what his design goals are, etc. And they sounded Fantastic! The first year I met him, he had the drivers he used on display. The following year, he told me that he had decided to no longer advertise what he uses because he wanted that kept confidential. So what? Will any BBQ sauce maker tell you his/her recepie? If not, does it taste worse?
And almost NO speaker manufacturer today makes their drivers in-house, nor will they tell you what they use. Some may tell you that their tweeters are from Focal or their woofers are from Accuton. But none of them will tell you exaclty which models they use and if they're modified for their design, they will never tell you what the modification is. Ask Wilson Audio what drivers they use; they'll most likely not share much. And they pot their crossovers so others can't see what components are in them without destroying them.
If I don't like what a manufacturer tells me, I don't try to get them to change their business practice. I just move on.
I see nothing illegal, immoral, or unethical here. Sorry, just my perspective.