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
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.



😏...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.