I built two, a 15/6 and a 12/6. They are my main cabs.
You can build your own fEARful by buying and cutting your own wood and buying your own components per the plans. You can also buy a 'flatpack' with everything you need and assemble it yourself.
You can order a fEARful, FEARLESS or DUALLY from an authorized builder.
Here's the main website:
greenboy.us speaker enclosures
In the middle of the page is a section called
Related Sites. There is where you will find the link to their forums, and the plans are on the
fEARful enclosures button there also.
Even if you do a DIY build, it is a fair bit of coin as the drivers spec'd are all top flight models, ones that most mass produced cab companies do not use as they will not be able to sell their cabs competitively in the marketplace. And all that stuff adds up, corners, handles, jackplates, covering, grilles, x-over compoents, damping material, glue, wood, etc. IOW, don't do it because you want to be cheap and save a buck. Do it to get a superior cab.