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


http://jazzman-esl-page.blogspot.com/2011/01/ripole-subs-are-underway.html

I am also researching a Slot-loaded W-frame sub woofer design, has anyone here ever used this design or heard it?

I made an enquiry about using two 12" servo subs and the response was that they are tuned for really only one frequency.
I have heard they will produce a chamber resonance at 200hz-300hz, which is way above where I'd want to cut them off anyway.

I am chasing 20Hz to 35Hz fill in the bottom end with my stand mounts, the servo amp has tunability built in which aught to help integration.
128x128rixthetrick
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

Yep a dinky di Aussie living in Texas, used to hot and muggy actually. Most Texans are pretty decent, I like their straight up honesty (generally) and take it or leave it, I make no pretence have no fakery nonsense generally. It works for me, and my wife she's straight forward, which works for me.

Enhancements? recreational pharmaceuticals?
Patent No. 6,630,507

I'm madder than a cut snake, crazier than a frog in a sock, so I don't partake. Now if I were in a situation where I was in pain, or seizures, or well there's plenty this 'lil herb can help. Maybe I read you wrong?

What is he building in there, hahaha? I may have read him wrong, I just think it's sport for him to stir a bit - we're all friends in here, far as I see it.
I see it's a MTV clip, I purchased every issue of the best of MTV live, great live acts. Highly recommend if you like live sounding 80's it's magic.

Don't get me wrong, fast bass is my goal too. I just don't doubt it's a capable technology, and I'm seriously looking at it down the road, you know, after some other projects get finished. Like my long over due finishing of the first two QRD17 diffusers I made with solid cherry wood. That has been a project I tell you, splitting the wood on a band saw, joining it, biscuit joining at times, then assembly.

Yeah Texans, they love their country music, which is kinda blended with pop compared to Aussie country. Not really my scene, but if it's clever humor, I can listen no worries.

I am fortunate, and my wife she likes music and dancing, so I get a lot of support and WAF. She keeps coming home with random LP's, she wants me to invest in a vinyl spinner, it's going to get costly I 'spose.