Danny Richie on loudspeaker design.

@willywonka: Like me? ;-)

I hear ya. I have learned an awful lot from his videos though, and the OB/Dipole sub he and Brian Ding of Rythmik Audio collaborated on is really special.

I have a tremendous amount of respect for Danny, as both a designer and a contributing member of the audiophile community. Just my opinion!

^ + 1 !

He takes on a task nobody else wanted and provides legitimate enhancements for a fee. 

And he charges no fee for the design work he puts into the loudspeakers sent him for evaluation, just the parts needed to implement his "fix" should the loudspeaker owner decide to move forward with the upgrade. I'm sure the owner pays shipping both ways, of course.

But remember gentle reader, GR Research offers it's products strictly as DIY kits, not fully assembled and finished products, though Richie has associates who will do the build if you are willing to pay.