New Tectonics force balanced Symmetric Drive Woofer (SDW)

Hi all, I was browsing through Tectonics website to check out some BMR's. And I saw this, which seems just released:

"The SDW70C is a force balanced Symmetric Drive Woofer (SDW), combining an ultra-compact dual diaphragm structure with an efficient motor. This allows for incredible bass in space constrained products such as displays and soundbars."

It's a very small woofer (96 x 96 mm size) that uses some nifty technology. Seems excellent for some very small nearfield desktop speakers. Combined with their smaller BMR's they might be nice for a small surround/atmos speaker too. Here's a link to the spec-sheet.
The technology reminds of one patent that two young Dutch guys sold to Sonos. Ah found it: this one.

I can't find it on any webshops yet, but might also not be available for consumer-sales. That would need to be asked, I guess.

Anyways, I wanted to share this with you guys and share thoughts.


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I seem to have missed where they mention the relative movement between the cones.
From their technology page:

"Symmetric Drive Woofer (SDW) technology enables compact transducers designed to maximize bass performance in space-constrained environments while minimizing any vibrations transmitted into surrounding structures. Conventional woofers are typically tall due to the need for large diaphragm movement and clearance for internal components, leading to increased device size. In contrast, SDW features a highly efficient and compact dual diaphragm structure which improves vibration cancellation. This innovative approach allows for greater diaphragm area within a smaller footprint, enhancing bass performance without requiring excessive movement or magnet material.

Paired with Tectonic’s BMR technology and a low crossover frequency, SDW technology unlocks unique design potential and system performance. Whether it is used in TVs, monitors, soundbars, or other size constrained applications, the bass performance will be a revelation to those who hear it."
 

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