You really can't reverse engineer like that. You have to have a driver that could actually be built, with measured T/S parameters. If RBH will publish the T/S parameters of that driver, I will tell you exactly.
But the bigger question is: - why this obsession with infrasonic frequencies? I maintain they do not contribute to the pleasure of audio, or AV on the home and actually almost certainly the reverse. They will annoy family members as Gene has pointed out with his family. They might cause structural damage, and probably will to largely American built homes. Even my TLs had enough infrasonic output to give me concerns from my frame built room at our Benedict location. Seriously that was a factor in building a concrete house. As I have said in this thread, we don't even know if it safe to expose humans to infrasonic sound on a regular basis and I strongly suspect it isn't. So just on the doctrine of primum non Nocere, this is a bad idea.
My opinion is that the pursuit of these infrasonic frequencies in home audio and HT is just plain daft, and more than likely unsafe.
There are some studies on the effects of the Solfeggio frequencies with regard to healing and effects down to the cellular/DNA level. They claim some music is healing, while others such as rock, are damaging.
Another
study cited by the NIH with regard to low frequency effect on patients with fibromyalgia.
Different frequencies for different purposes and some information relative to the
Schumann Resonances.
I was reading about this just the other night and trying some of the frequencies out. 528hz, for example, for 10 minutes, had a nearly if not truly intoxicating effect on me personally. That frequency is claimed to heal, and also to perhaps repair DNA. 75hz, is said to positively effect the CNS.
I'm not particularly fond of frequencies below 20hz, at least not continuously.
I had not read this thread until last night. It caused me to assess my own subwoofers relative to music I am interested in. I listened to jazz, pop and EDM. While I like the effects of EDM or electronic music in general, it wears on me much quicker than say, jazz. I turn the gain down significantly with EDM, as a little goes a long way with me. I do enjoy the double bass when played with a bow and find it pleasing when plucked, like when used in jazz and other less complicated music.
None of the lowest effects included in movies cause me to emulate it at home though. I can get my fix just what is in more common music types and that contained in contemporary jazz. I'd really have to subdue every loose window or door in my house and I am not fond of hearing the sound of windows rattling. That to me is as displeasing as a busted speaker distorting.