well, for the asking price, you can get a lot of subs that will compete. maybe not down to 1hz, but down to 10hz at least.
For sub-15 I just bolted an old jack-hammer to the ceiling in the basement, and used the sub output to drive the throttle. My ears don't hear below 15Hz, only my feet and stomach - so it's perfect.
I see no reason to buy this. The lowest I've heard of in a movie is 10-12 hz and it was a very faint signal. It's not worth 13k if you can't hear it.
Yeah definetly not worth 13k. No sound apparatus to me is worth 13k, (except a device that restores hearing if you're deaf). However, infrasonic, to me is heard (felt) more with the body than with the ears and I believe there were some studies online (can't remember sources) of infrasonic sounds to effect mood even though its inaudible. Can anyone verify that?
i cant veryify that, but i have had personal experience with "super tweeters" that go beyond 20khz. while you cant "hear" them (they speaker was blasting away and you coldnt hear any output from the driver), when it was covered up (blindfolded) you could easily hear a noticeable change in the airyness of the music.
i used to do this with customers. i would tell them to listen to the tweeter (ear right up next to it). they heard "nothing" of course. then i would tell them to sit down and close their eyes and tell me when they heard the music change. i would simply cover the driver and uncover it. they would immediately say something when i covered it. it was VERY easy to do and it was 100% successful.
so, im sure something similar would apply to bass...
i used to do this with customers. i would tell them to listen to the tweeter (ear right up next to it). they heard "nothing" of course. then i would tell them to sit down and close their eyes and tell me when they heard the music change. i would simply cover the driver and uncover it. they would immediately say something when i covered it. it was VERY easy to do and it was 100% successful.
so, im sure something similar would apply to bass...
heard it
I heard it, if you can call it that, at RMAF 05. Nothing was listenable aftewards for an hour or so. Interesting, yes. Practical, maybe if you need to induce vomitting or remove all sense of inner balance. Dangerous? The DOD has been conductoing tests on low freq. weapons for years...
I heard it, if you can call it that, at RMAF 05. Nothing was listenable aftewards for an hour or so. Interesting, yes. Practical, maybe if you need to induce vomitting or remove all sense of inner balance. Dangerous? The DOD has been conductoing tests on low freq. weapons for years...
optichammer:
hey, another colorado resident! i went to RMAF, but didnt get to see the fan sub there. being that im an "industry guy", most of my time was spent shaking hands rather than listening and enjoying the stuff. i would have really liked to have experienced it.
hey, another colorado resident! i went to RMAF, but didnt get to see the fan sub there. being that im an "industry guy", most of my time was spent shaking hands rather than listening and enjoying the stuff. i would have really liked to have experienced it.
"heard it Post #28
I heard it, if you can call it that, at RMAF 05. Nothing was listenable aftewards for an hour or so. Interesting, yes. Practical, maybe if you need to induce vomitting or remove all sense of inner balance. Dangerous? The DOD has been conductoing tests on low freq. weapons for years..."
What exactly do you mean by "Nothing was listenable afterwards for an hour or so."? Was it because it made you dizzy, queazy, etc?
Maybe the manufacturer should advise the use of Dramamine before "listening" to it. Maybe there should be a "Use at your own risk" warning on it. I thought listening to music was supposed to be an enjoyable experience!
P.S. - What did they play that you heard this thing with? I'm still baffled (pun intended) about recorded information at those frequencies - it must be artificially created and digitally pumped into the CD/DVD etc. - there's no music I know of at those levels, and what recording devices would capture it even if it were there naturally?
I heard it, if you can call it that, at RMAF 05. Nothing was listenable aftewards for an hour or so. Interesting, yes. Practical, maybe if you need to induce vomitting or remove all sense of inner balance. Dangerous? The DOD has been conductoing tests on low freq. weapons for years..."
What exactly do you mean by "Nothing was listenable afterwards for an hour or so."? Was it because it made you dizzy, queazy, etc?
Maybe the manufacturer should advise the use of Dramamine before "listening" to it. Maybe there should be a "Use at your own risk" warning on it. I thought listening to music was supposed to be an enjoyable experience!
P.S. - What did they play that you heard this thing with? I'm still baffled (pun intended) about recorded information at those frequencies - it must be artificially created and digitally pumped into the CD/DVD etc. - there's no music I know of at those levels, and what recording devices would capture it even if it were there naturally?
Volenti said:
Hey don't sell yourself short! You won't know if it's "inferior" until you actually build it and try it out - it may surprise you and work just as well as the commercial unit, or good enough anyway.
In which case it won't be inferior at all, especially since you can beat that $13k price tag by miles. Maybe you'll end up being their competition! Maybe yours will only cost $1300!
Inferior/infrasonic - I'm sure there's a pun in there somewhere...
Interesting, I spent about 45 min in the room listening, taking pics and talking to Bruce. I certainly noticed no adverse effects afterward.
It's a 3 phase 1/3rd hp motor spinning at a constant 300rpm. A 3 phase motor is used becase it's rotation is smoother than single phase.
The flat sided blades create a rising response as the frequencies drop. The curved blades have a flat response as frequency goes down
Here are some more pics of the Thigpen rotary woofer.
Experiencing it was so cool, I certainly want one ....😀
The high cost is due to the fact that the current units are hand made. Once in production the price will of course drop.
Thomas,
i was wondering when you would see this thread. i wish you had better pictures of the fin assembly and how they are actually tilted. it looks like a black spider back there, just like a regular old driver motor assembly.
i was wondering when you would see this thread. i wish you had better pictures of the fin assembly and how they are actually tilted. it looks like a black spider back there, just like a regular old driver motor assembly.
Hi Rob,
Yep according to Bruce basically it is. The trick and not well reproduced in the pics is the articulation assembly. Think of a helicopter rotor, that's basically what's involved for each blade.
The hand in the pic holding the blade, is that of the machinist who made the demo units.
I think the demo at the RMAF was a test run prior to CES.
Edit: there appears to be only one actuator rod from the VC. That rotates one blade, the blades are connected together inside the hub... (I think... 😉 )
If it was $400 or so I would have one. I'm interested in the DIY version.
Brian/ searching for the elusive brown note.
Brian/ searching for the elusive brown note.
if i didnt have so many projects that im trying to finish, this one would definately be on my work bench right now. it seems like it would be very easy and cheap to build a prototype. it might not work great, but to just get the concept of it wouldnt be hard.
ThomasW said:
From someone on slashdot :
Is this subwoofer even legal? International law bans transmitters which are capable of transmitting on the frequency of approx 6 or 7Hz because that's the resonant frequency of the human ribcage. Seems like this could be used as a pretty lethal weapon from the (short) description in the posting.
Rintek
TRW-17 "The most powerful subwoofer in the world"
Not sure if this has been posted yet, but I thought this was pretty interesting! Any thoughts on sound quality?
http://www.sonicflare.com/archives/eminent-tech-trw-17-the-most-powerful-subwoofer-in-the-world.php
-=Randy
Not sure if this has been posted yet, but I thought this was pretty interesting! Any thoughts on sound quality?
http://www.sonicflare.com/archives/eminent-tech-trw-17-the-most-powerful-subwoofer-in-the-world.php
-=Randy
It works if you set it to a certain frequency..but cannot AFAIK reproduce a musical signal...i.e. change in frequency and amplitude.
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