I agree with the previous posts. Max drag racing numbers are fun to compare, but they don't really tell us much about how things will actually sound. And, they certainly aren't necessary for most, even fairly knowledgeable hobbyists, to know that the new TV36 iPal's and Neo's were going to be really excellent subs. (I have been extremely impressed with the use of the 18" iPal drivers. PSA went all-in on that design, in my opinion.)
At some point, Tom will add graphs to his website which illustrate the native shape of the frequency response, via a compression graph. When he does, it will be interesting to compare the various TV36 models, against each other, to see whether they all start to roll-off at the same frequency, and to see how the compression characteristics vary. But, as noted in earlier posts, no graphs that anyone can post will tell us as much about the sound quality as some of the subjective comments posted by both the designer and some of the early buyers will.
I don't personally care if the subs are never tested by an independent third party, and the lack of independent testing won't influence my willingness to recommend the subs to people who are looking for a great blend of mid-bass and ULF. That's consistent with my belief that 99.9% of subwoofer buyers will be content with really good, undistorted, uncompressed bass into the low-teens.
After the pre-order pricing ends, they won't be inexpensive subs, but you get what you pay for (or less, sometimes) and most buyers will have plenty of in-room measurements and owner testimonials to rely on at that point.
GUIDE TO SUBWOOFER CALIBRATION AND BASS PREFERENCES
* The Guide linked above is a comprehensive guide to Audio & HT systems, including:
Speaker placements & Room treatments; HT calibration & Room EQ; Room gain; Bass
Preferences; Subwoofer Buyer's Guide: Sealed/ported; ID subs; Subwoofer placement.