Has anyone heard or built an Axel Ridtahler (Ridtahler dipole) sub woofer?

*G*  Good morning to you in the Down Under....;)

Yeah, hip to MDF...routes like butter, can be finished to whatever ones' predilections desire (lacquer finishes, anyone?), and will ruin your lungs if your 'inhaled distractions' haven't...
Masking is SOP here in the States for those with any rational amount of synapse in contact with each other, so my comments on unsocial distancing elsewhere are in force.  My use of thinners and myriad other 'non-entertaining' Rx for an aortic valve & pacemaker require (nay, Demand) I do so unless alone with my dog & cats (2)....
Spouse is currently on a jobsite, so considering wearing one when we get about to doing 'the Wild Thang' is a potential, but kinda gets in the way of the mood, but...*shrug*...whatya say...*L*

A Tymphany in the trunk was my understanding of their app, so no surprise there, and no 'eye rolls', either.  I'd thought of 4 in a distributed system in a listening space, but since they're N/A anymore...*tsk*
No induced rattling must be nice....I've thought that 'bassers' here, rattling all the hardware in their 'rides', ought to be in a routine of re-torquing all the bolts 'n screws within, less the vehicle exhibit an URD (Unplanned Rapid Disassembly) at the intersections...

"HEY!  Your driveshaft just fell off!"  Embarrassing, that....since most are RWD....and most sub arrays are in the boot..trunk....'back there'....;) *L*

The 'practical engineer' in me thinks the T-LATs' were victims of a complex design (referring back to the ESS Transar...neat to stare at, an 'interesting listen', but the mass & weight of the parts linking the bits?🙄...), but 'user enthusiasm' may have made a big impression with the warranty dept. and the reviews....  You 'may' be more conservative in the use of your LAT....

I suspect your interest in servo-drives for larger arrays may stem from that...educate my impression if astray....*G*

I wonder if there is any 'induced delay' in a servo setup....when we discuss fractional time 'loops' in a system that 'self corrects' IRT even  if driven by a digital app, on-board or not.  AG is a hotbed for those who hear the footsteps of mosquitos on the violins' bridge in a quiet passage.

I'm joking and teasing....'gimme' a break, Jake'. ;)

Smear in a bass line, esp. with a bass viola would seem a concern; not my current 'fare', but Understood.  EDM/Synthophila is my 'fun distract', but I listen to nearly anything sans MOR C/W....whatever That is, around the US....'default FM', to be escaped from....*L*

*tag* You're 'It', Jerry.... 

"...that boy ain't nothin' but Trouble...."

Ha!
Yesterday I surprised the younger workmate who's been assigned to work with me, alas I haven't worked out why the boss is punishing him, but I bet the truth will come out some day.

I was playing music off my phone through the truck's stereo, notice I didn't say hifi system, and I asked him what he liked to listen to? EDM
I cranked up some Armin Van Buuren he was a little surprised, then I played some mash ups and Deadmau5 mashup was a winner. I asked him if he was surprised, and he was. We talked about EDM events we'd been to with Dutch artists and such.

Now I will say that I have EDM on my home server, but generally for listening I like acoustic instruments, but I play some Doof Doof every now and then.

My car system was all about SQ, full time alignment, fully active channel separation into amplifier channel into each driver. European brand components, all sitting in boxes from the move to the US.
So I've come up in the World, from Downunder to Down South (up north, stateside).

I don't own a vehicle, I have personal use of a 2020 GMC Sierra truck from work, it's got some bells and whistles, and no payments for me. Paying down the mortgage at the moment, trying to be a responsible adult, well it's a good cover.

I'm an automation tech, and yeah I hear you on latency during the process loop, but with 4ms cycles, I think modern logic controllers will have little issue with low frequency correction like sub woofers.
You'd have every right to tell it off if it didn't perform with honor, "just one job, you're given just one job!"

sans MOR C/W?

sans = without or not containing, right? The rest is lost in translation to me, I'm afraid.

'gimme' a break, Jake'. ;)

In Australia that translates to, I'm just joshing mate.

Oh, I'm more worried about the mossies and nats eating me after all this bloody rain, and during quiet parts in music I can hear them buzzing - and I don't claim dog like hearing prowess either. Well I hope it's the mossies buzzing, maybe I do have tinnitus?

*LOL*  OK, 'stateside' now....I've inferred your current residence in TX, is correct or no?  If so...Gawd, weather (or not), heat/humidity, and the way 'mericans act will not have mercy upon you.

...but you've likely figured that out by now....;)  Welcome to the US....and I do mean Us....*L*

As a 'native' (of SoCA, not of the 'originals'), I'm still an item of interest to the locals here in NC.  But usually when I 'interact' in some fashion socially predictable...

I'm not a Dr., but try to cause no harm....or much.....;)

Great, no vehicle pymts., just drive and smile the miles....👍

deadmau5, huh?

https://www.youtube.com/watch?v=joWKEX03wd0&list=RDShB_HI6F1f4&index=8

...happy that 'AV' like that wasn't around in the late '60s'~'70s'.... ;)

Now, paranoia infused stuff like nonoises' 
https://www.youtube.com/watch?v=04qPdGNA_KM

'One needs....balance...in what one exposes oneself to....'
Hard to do of late, but lets' ignore that sub-routine for now....maybe ever...

Latency isn't likely an issue for the bulk of us, but you're down with how 'some' react to that line of logic...."I can hear a pin drop impact!"

'K, kewl......me 2, if from an air gun, butt 1st..... (Of the pin....point 1st, negative response....)  Ow. ;)

MOR/CW= Middle Of Road/Country Western...MOR/Pop, and all the rest, you've no doubt been exposed by now.....

Yes, jus' joshin'...I do that a lot.  Audio for me is a 'hobby', a pleasant distract from the usual Life in the Big Sh*tty, although AVL isn't big...just of a size spouse 'n self can live with & within.... *S*

I prefer a high degree of 'flexibility' over sheer 'perfection' at this time, so component choices reflect that here.  No real stand-out items, but that which scratches my particular itch(es)....in a far from ideal space to do so.

...but, that's another story.  And, at my age, I've no short stories anymore.

Best dealt with over some form of 'adult enhancement' of 'legal means'....and....

No, I won't 'go there'....the moderators would have a field day....*L*

Happi Weak-end, J

https://www.youtube.com/watch?v=oEutbPu2YwI @ 44:30...
CA is consuming itself in a fashion unknown by yours truly., but perhaps feared yourself previously....FBS was good to give the 'Home Folks' a moment of appreciation, which those who fight the impossible for us more than deserve....*hand on heart, but not for any one flag*

Haven’t built it but I’ve seen a much smaller version and the owner said it was the best he’s ever heard.

Nelson Pass slot loaded open baffle project

https://www.firstwatt.com/pdf/art_slob.pdf

Another DIY option that has a fan following.

Decaware wicked one.

https://www.decware.com/newsite/wo32.htm