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
😏...we probably ought to move all this to PMland, but if some are not amused, they can walk on by....

'cept @danager ...Thanks for the firstwatt link, which opens on 'the Heil Years'...have a pair of the large AMT's, just got 'gifted' to the 2241AM xover for their original subs....*S*👍

Hard to find LF that can pace with an AMT, but anyone with 2way 'stats likely have the same issue.....but therein lies the challenge and the goal, right? 🙄

So, rix....which part of TX?  No, not a 'trick the rix' query....just a personal alignment of locale(s)....but, having 1.5 decades in HOU, one develops certain degrees of appreciation tainted by a level of 'WTF Now?!' of Texarcana....

Fav:

Can screw up the working parts of a brick.

(Not that anywhere else is immune, no....)
I may find self in your locale in the next year....

Do Not Be Afraid.  Have had all my shots, house-trained, not physically endowed to be a severe threat....would issue advance warning....would wear the foil hat, all that....

Did work in Frisco in the NE quadrant.....an item done needs...a revision of it's vision, so to speak if words were said but not read....*g*
Danager is cool, met him at millercarbon's place.

West Texas, Odessa. I work mostly out of Midland actually. Working out in the oil fields, amazing what I've seen in Texas and abroad. Horny toads, Bobcat, loads of Coyotes, White tails, Prarie dogs, Javelina ?(Mexican black pigs?), rattlers, loads of rabbits and jack rabbits, I think I even saw a Lama or something like it one dusty day. Squirrels, roadrunners, Tarantulas walking across the roads by the hundreds, wild donkey, picked up a good sized turtle walking down a lease road (I eventually put it back) and when I went to Wyoming I saw my first Bison, racoons, wild brown bears even.

I really love wildlife and have been around animals most of my life, used to catch snakes in Australia, that takes a bit of guts I tell you, perhaps foolishness. Not fond of blue bottles or jellyfish - you get stung and I bet the love of them wears thin real fast.

The real story of rix the trick. Nestle has a chocolate drink mixer called Quick. There was a TV advert with a jingle that went Quick's the trick, someone I can't recall who, changed it to Rick's the Trick after the jingle.
I liked it better than speedy, oh I was kinda slowing down the card game we were playing when I was a young fella, and the call went across the table, C'mon Speedy! Sarcasm is currency in Aus.
O, dessa....near Midland, home of the Chaparrals...*S*

Followed CanAm racing in my earlier years, the Jim Hall racing cars became the objects of concern to that others feared, perhaps the touchstone of that demi-spoiler on ones' car...

If GM was really serious about having a $erious $upercar to sell (not that the mid-engine Corvette will be a slouch, no), they would roll out a Chaparral....*sigh*

In the 'Ford vs. Ferrari' era, the only lack was the backing of $erious Backing from GM.  If another racing 'auto worship' movie is to be made, there is a good history to be revisited....imho...
To the point of a good friend, temporary employer, and car enthusiast in his way always swore he'd like to build 'one of his own...not to race, but merely to have.'
If he'd lived longer than he did, I'd wager John would have dumped his 230SL in a heartbeat for a DIY 2A~2C....

Go stare at the past, tap a fender for me...;) *S*

Pity one can't buy one, unlike a Ford GT....IF you can get on the list to get one of the latter....

But that's just car lust, and if given my druthers and the means, I'd be in a Lotus nearly anything...*L*

'asvjerry' is fairly obvious, with just a tweak on AVL to as(he)v(ille)...etc.
The 'gull' comes from LateNightTales, Fatboy Slim....

I was struck by the image of a gull in the dark...atypical, with a near-quizzical turn of the beak in the lighting....
...and far more of potential interest than one of me in the dark, either being not very awake or pissed at being so... *L* 

I'd suppose being a fish far from the sea at MC's Audio BBQ....

https://www.youtube.com/watch?v=Z4mbxaa3XL8

...but a random run-in at some audio extravaganza a more likely event, either of which is unlikely.

Perhaps in a later life...;)