Nope. Don makes a wide variety of mid loaded cabs, including some with the 3015LF and 18sound mid driver. He will use various porting designs (front side and rear), and his own crossover or an appropriate off the shelf crossover. While the 12/6 an 15/6 designs are a pretty small part of his business, a while back when we talked about it, he mentioned that the 3012LF and Faital driver in a rear ported box was his favorite and also I believe his 'best seller' of that 'type' of box. Again, Don has been doing mid driver loaded cab designs for over a decade.
He will build 810 sealed cabs also but really isn't using Ampeg's plans. He kind of does his own thing for better or worse.
However, if someone asks him to do a properly tuned box with a 3012LF and 18sound mid driver with a front port, there isn't a lot of different ways to do that, and just like most 410's, all these executions will look very similar.
Of course, the tone of the LDS 12/6 and 15/6 cabs will SOUND very similar to other designs using the same non-proprietary components, since it is pretty much 'off the shelf' components (versus, for example, the very different sound of the Epifani 410 or Bergantino 410, etc., due to proprietary drivers, etc.), even though they look very similar. Some feel the Greenboy crossover is the best, and that would be an excellent reason to choose the 'fEARful' version of cab with these particular drivers using a builder who will build an 'exact' fEArful.
Again, stock speakers, pretty basic WinSID box and tuning, stock mid drivers. Kind of funny that Don gets hammered by the same people for 'copying fEARfuls' and at the same time ' not following the fEARful plans! Silly.
It would be like saying 'Don is using Epifani's design' when he builds a 410. Makes no sense. Is Greenboy 'copying' Don's design now that he is putting out plans for a two way 8" box, similar to what Don has been building for YEARS? No... basic stuff, stock drivers.
Don used fEarful plans to build my cab, he just didn't follow them exactly enough (which I asked for). I think that's the most obvious problem that many fEArful fans experienced, and potentially the only legal issue.
The fEARful isn't just some "WinISD" adventure, and you saying something like that is being extremely unfair and ignorant to what greenboy actually put into his project. Greenboy values performance and I think he just wants respect for what he did, which is completely understandable. Saying something like that is just disrespectful, especially after all the discussion you've seen about it.
And there's no doubt that greenboy's design boosted LDS business. I think if Don acknowledged that and took more care to design the cabs as greenboy intended (when that's what people asked for), gb & co wouldn't be upset. There's no legal issue with using the plans since they were released for free, it's just an unspoken respect kind of thing. The real problem is when Don got all the people who wanted a fEarful cab (because they couldn't DIY it), and then gave them something that was not really what they asked for. Some people are less upset about those "change of plans" than others, but regardless, that's what happened. And Don kinda brushed off those little details like they're an oversight and don't really matter.
All that said, I really like my LDS cab for the most part. I ended up paying 750 after shipping -- several hundred less than what I'd pay an authorized builder, but I also believe that I got several hundred dollars less cab. I'm going to change the x-overs which will push it to around the 900 mark anyways. If there were an authorized builder around when I got my cab, I would have gone with that option.
I guess if you want a cheaper cab, that's what you'll get. Still good but not fEarfully good
If that doesn't matter to you then fine but might as well be aware of it before making a choice.