The Dali looks cool - though not sure if it's a full-on Purifi motor or just the distinctive surround. Still, I haven't seen an in-room version.
As for Ascendo, do you mean this one:
The SMSG10 is a powerful 10" subwoofer with a very shallow 4" deep enclosure. It contains a powerful amplifier and a DSP for room correction.
www.aia-cinema.com
It's probably a good sub. The woofer it uses* is very well optimized for tiny cabinets, with a big voicecoil to deal with the inevitable heat and a neo magnet for good motor force in a small package. It's also an expensive driver.
Grimani also has one in this form factor.
Active Amplified DSP SubwooferHigh DynamicsExtended Bass Response Flush or Surface Mount High performance Exceptional Dynamics and Finesse Active Amplified / Integrated Digital Signal Processing / Room EQ Basic Specifications: 10” woofer / 89dB efficiency (2.83V)30Hz to 200Hz / 300W rack...
www.grimanisystems.com
No idea about price, finish options, or drive-unit (I know what it
looks like from the frame/cone but that could be incorrect).
And Sigberg, obviously.
*Other CI companies, such as Triad and Leon Speakers, also use this woofer in their slim form factor subs. So does Amphion in the pro space. Maybe "Ascendo" asks the Indonesians to add a sticker on the back bearing an Ascendo model number to "customize" it...I can confirm from personal measurement that Leon and Triad both use the same part you can buy from, e.g. Madisound.