The Dark Art of speaker design. Even without magic wand, we appreciate that selection of parts, tuning of their interactions and finally, anticipated embedding in all manner of rooms—the details of which the designer can't know—is no straightforward computer simulation. Basic math simply still tells us that from the lower midrange down, Bellatrix is a 10" two-way. Two 7" drivers add up to one compound driver of 9.9" Ø. Halving duty to meet the 2'900Hz tweeter with one driver shrinks the 10-incher back to 7". In the higher frequencies, a smaller driver has advantages. That have-your-cake-and-eat-it solution is also favored by Michael Børresen of Audio Group Denmark. Why not a 3-way instead? A 2.5-way's midrange driver only sees a low-pass below the tweeter. There's no high-pass to a woofer. In the bottom it runs wide open like any 2-way. Having two bass drivers share the job of one works them less hard so excursions diminish, distortion lowers.

Premium drivers are only the start.

Piotr's selection of tweeter was predicated upon matching its sensitivity to that of his chosen 4Ω mid/woofer without voltage divider or padding resistor. Why mate a 99dB tweeter to an 88dB mid/woofer only to suffocate the tweeter by 11dB? During the C-19 lockdown, Piotr turned lemons into lemonade. He extended his R&D cycle to a full 4 years to perfect every detail to the nth degree: the trixy bits of Bellatrix.

Even casual bystanders will appreciate that this Divine Acoustics speaker isn't just another rectangular box with an exotic badge stuck to it.

If the devil is in the details, what do we think God wants?

The drawing shows the big port tube starting below the woofer.

Here Piotr's workshop shows the skeleton of the Bellatrix cab. We see just how sizable the port diameter in the bottom plate is to suggest good dynamic responsiveness.

Blue metal jig at left for precise alignment of the internal braces and rod tensioners.

The next photo shows what for this octagonal cross section becomes the sidewall treatment. It offsets the veneer skins of the surrounding facets. This clearly is no easy build. Adding up our pictorial evidence, a €9K/pr tag seems unexpectedly friendly. Perhaps crass capitalism hasn't yet breached this country's South West? There's an award already for Bellatrix's first review. Its writer captured the same point with "looking at how these are built, it's hard for me to understand how the company will make any money." That's relative not to direct sales but dealers and distributors. Duisburg's Len Hifi for example who loaned me their demonstrator Linnenberg Georg Friedrich Händel monos bring Divine Acoustics to Germany.