Is anyone thinking about building Walsh drivers?

Well, I'll through in my $0.02. I am not a DIYer, but here's where I would start:

The big hurdle is that most amateur speaker builders source their drivers, and sometimes crossovers, from OEM manufacturers, like SEAS. AFAIK, no OEM driver manufacturers offer a Walsh driver. So, you're talking about building a driver from scratch. That could involve fabricating baskets, coils, cone material fitting, etc.

To get an idea of how Walsh drivers are constructed, there are some diagrams with cutaways on the Ohm web site.

I see a wide variety of omni-Walsh driver profiles. The old Ohm F's driver, which was full range, was shaped much like a traffic cone. The Decware driver, which is crossed over to a tweeter at some point, looks more like the rubber part of a toilet plunger. The current Ohm Walsh drivers, I think, are somewhere in between, and are crossed over at 8kHz to a tweeter. Interestingly, I believe some of the current Walsh drivers use aluminum for the cone material.

At least the cabinet ought to be simple - just drill a round hole on top and bolt the driver to the cabinet's top plate.

If you want to go the OEM route, I would think that John Strohbeen at Ohm would be happy to sell you a set of "cans" ready to be mounted to a cabinet. I don't know if these sets include a crossover to the tweeter or not, but you can always rebuild the crossover. I have wondered sometimes how my Ohm Walsh 2000s would sound with a pricier tweeter, but I am not curious enough to actually do anything.

That's all I can think of. Good luck, and keep us posted.

Westborn - I won't argue taste with you, but have you heard the current models in the Ohm Walsh line? I had never heard Ohm Walsh speakers prior to my home trial of the 2000s, so my only comparison was to other brands of speakers. IME, the 2000s compete extremely well in and a good bit above their price point. John Strohbeen has refined his products, and, obviously since I bought them, I find them to be among the best speakers out there. Of course, YMMV, but if you value warmth, detail, large soundstages, well-defined imaging, accurate timbre, and clean extension at both ends, you might be surprised by the current Ohm line.

Cool.  Please keep us posted.  How about some pictures?

Thanks for the post, asvjerry!  Good luck!