Single driver speakers. Are they worth considering ?

A single, dynamic "full-range" driver per channel is a single point source per channel. One point source per channel is a major draw, as is the avoidance of a passive cross-over, but for a single driver to approximate anything close to full-range let alone maintain its virtues over a wider band is hardly realistic, but I may sit corrected with the representation out there and the gains of the development over the years. Pearl Acoustic speakers, among other brands, have interesting (small) single-driver-sans-XO options for the smaller listening areas and with SPL-limitations. Charney Audio, Omega speakers and Voxativ are very highly praised, and may offer a more all-out assault compared to multi-way speakers with pros and cons on both sides. A coaxial driver also acts as a single point source, though it needs a cross-over (but not necessarily as passive one) and comes with caveats in the throat area of the HF-unit here and the LF-cone to act more or less as a horn. Some coaxial drivers do come equipped with a separate horn/waveguide to load the compression driver inside. The 10" coaxial driver-equipped WLM Diva speakers sound great, I find, and mate well with lower powered tube amps. There’s also the interesting, active Geithain RL 901K speakers that fairly closely emulates a point source. And then there’s Danley Sound Labs Synergy horns that act as a true point source per channel/speaker, by summing the sound of several drivers via a shared horn. They’re high efficiency speakers intended for the pro arena, but that’s not to say the can’t sound excellent in a domestic environment. Different options here, but the SH50’s are popular among the (open-minded) audiophiles that appreciate live-like dynamics and live-like tonality and overall presentation. Mated with a pair of, say, Danley Sound Labs TH50 tapped horn subs it’s a dynamite combo that can challenge most any "high-end" speakers out there, at a much cheaper price and close to unlimited dynamic envelope to boot.

Cube audio founder Grzegorz Rulka sent me a blueprint for cabinets. He recommended not to put these drivers into generic cabinet (which I also explored). Jim Salk did a great job and for the lowest price I could find (I took a couple of quotes). Salk prefers to work with MDF boards. I insisted on plywood which raised the price a bit. But Jim convinced me to put a second MDF board layer for the front baffle to stiffen it and reduce vibrations and provide more support for these heavy drivers. I think it was an excellent decision. Jim was super patient with me and worked on details for a long time. Highly recommended. PM me for details about the prices.
As for the picts - it does not look It is possible to insert in this forum? I chose a black finish to achieve more dramatic contrast for orange drivers.

Thanks. Could you perhaps post a link to a Google drive file (or similar)?

@tkukielk that’s a great idea having salk build the cabinets. I’m a big Salk fan. I have two pairs now (Song3’s and Wow1’s) and also had a pair of songtowers. I also recently purchased Cube Nenuphar Mini’s. I wanted a walnut finish and was thinking of contacting Jim to build a cabinet since Cube sells the driver and the speaker is very simple since it doesn’t have a crossover. However, when I contacted the dealer he said he had a special pair of walnut mini’s already on the way for himself and sold them to me. Just curious, how much did jim charge? His cabinetry is excellent so I wouldn’t hesitate using him to fabricate these speakers. Any pics?

Also love that you’re using the Evo 300 with them. I’m using a Canary M90 push pull 300b amp. Sounds great but is a bit polite as well. My first tube amp was a Primaluna Dialogue 1 and I really liked it. I’ve been thinking of trying the Evo 300 with these as I really like the EL-34 tubes.