I’m glad these guys spent all this time and effort, recorded it, and uploaded it to TH-cam so I could listen to it quietly on my iPhone in a room where the air conditioner is louder than this audio.
@@willjimenez9013 Description says it was made to teach elementary kids how speakers work (hence it was clear so you could see the parts, and extra big so kids could see everything at an easier scale and huddle around it). Its just like all those jet engine turbine cutaways you see at museums or schools/universities (many are actual decommissioned jet engines), its for educational purpose.
@@tdh7865 you know, uh, any efficiencies in any currents, also Google can say whatever the hell it wants when I turn on a two horsepower motor I know what the hell kind of power consumption I clearly observe with multiple different instruments.. why don't you look up what kind of power inverter it takes to Start a 2 HP horsepower motor.. 🤣🤣😎 I know for a damn fact it's over 7,000. If I hold the shaft still on the motor consumes more power. Go ahead and make another comment I was going to guess $8,500 but $9,000 is cooler. Of course you wouldn't know about anything that is cool it seems.
@@tdh7865 I remember when I used to be like you, going instantly research a bunch of stuff and then regurgitate it. This is the real world buddy. I know motors like I know the back of my hand my entire property and all of my work is 100% off grid solar powered. I happen to have a 2 horsepower well pump that can be ran on 110 or 220🤣🤣 I'm running it on 119 at the moment. It takes over 8,000 Watts starting current. You have valid points but you're making assumptions that I'm guessing shit and I'm repeating what the fuck I see with my own eyes in front of me. Go try to school someone else because I would demolish you in electrical engineering. I guarantee you there's not 8,000 Watts going into that subwoofer you got to be a complete novice to believe that nonsense it's just something that I stated it's a fucking TH-cam comment. 🤣🤣 I run 3200 true Watts through 4 12-in subwoofers custom everything and I can't even turn the shit up because it breaks my windows and I can't see straight. If you put even 4,000 w into that sub it would destroy itself.
@@tdh7865 You crack me up smalls. 🤣🤣You sound like you need some hobbies. Horsepower has everything to do with motors. Especially electric motors. I've got you switching your numbers all around you probably doing all kinds of research Schooling yourself. 😂😂
@@1998keagan1 horsepower has everything to do with horses, as in the amount of work the can do. Torque is a unit of force, horsepower is work. Specifically, the amount of work done when moving 33,000 lbs 1 foot in 1 minute. The watt is literally named after a guy who helped develope the steam engine... I mostly made this comment so I could find this video again... but yeah, put a little more horsepower into your troll game (or convert it to watts I really don't care 1hp=746W)
I think it's effectively a small subwoofer, just because of how weak the membrane is. It moves just the inner part, while the rest is bending instead of moving in the same way.
@@s33saudios I stood in a hall with two subwoofers sized around 1 meter and believe me I couldn't get closer than 10 meters without it being uncomfortable due to violently shaking my inside (and outside) organs
+gaptoofgranny YEP!! I was actually wondering if that was the inspiration...the equipment they're powering it with is also like what Doc Brown would use....lol
I was honestly interested in how far you've came since this as Graduate student. I see your an Associate Professor now and gotta say that's pretty amazing.
Ali Ahadi Yes, all you would have to do is stretch the fuck out of it, widen the body so it takes up 6 traffic lanes, make it no longer street legal, and the best part is, it no longer fits in your garage, or on the street outside your house. All for the sake of putting a woofer in.. Great idea, right?
Great Scott… that woofer seems capable of producing 1.21 Jiggawatts and tearing the very fabric of the time space continuum while blowing every ear drum from here and now back to 1985
Despite the obvious purpose, the membrane fluctuates quite well, and if the development of the diffuser was entrusted to the aviation design engineers, they would bring the system to close to perfection, and this would become an artwork.
@@ScroganNot just a carbon fiber cone (it has nasty resonance modes), but structured to take into account the architectural stiffness and intrinsic speeds of sound in the main materials used. It's all quite complicated. But in fact, you need to have the most rigid design with a minimum mass and well-suppressed internal vibration modes. Не просто конус из карбонового волокна (он обладает неприятными модами резонансов), но и структруированный с учётом архитектурной жёсткости и внутренним скоростям звука в основных используемых материалах. Это всё достаточно сложно. Но по сути нужно иметь максимально жёсткую конструкцию с минимальной массой и хорошо подавленными внутренними модами колебаний.
If you did all of that it would still suck. All membranes and resonant air space enclosures have an 'ideal' combination of size, cone surface area and electromagnetic properties of the motor. This applies not only to speakers but, musical instruments. For example a 14" x 22" kick drum has a natural resonant frequency of 60Hz. Even changing the heads will still cause that instrument to maintain it's natural resonance. The larger the diaphragm the slower and more inarticulate the response. The larger the surface area, the more the upper range 'beams.' That's why tweeters are small.
@@keithmoriyama5421 That's solved with using a multiple-voice coil setup, distributed radially, in combination with a more rigid substrate. Apply additional coils at resonant negative zones, and with some delay tweaking individually, you can harmonize the entire surface. Essentially, yes it would suck, if you **only** use a single coil. Think outside the box next time. Thought this was engineering, not insanity. If it's too floppy to move at once, grab it in more places and shake it harder.
To those arguing over how many HP this speaker is capable of handling, 1HP is just under 746 watts equivalent. And motors on things like compressors take far more current (and thus watts) to start than they do to run, that is why they typically have large starting capacitors.
If you really want to blow their minds, do the same output with an 8" 4ohm sub into a large bass-horn. and show them how passive amplification works. :)
it would be nice to see all the sensor readings spec's , pressure reading's etc ,etc. Awesome job U freaky Creators- The World needs more people like yall in it.
That thing is pure madness! it needs it's own nuclear power plant but I thought it would get closer to 5-10hz. Mid 30's is a bit disappointing. I thinks it needs some re-engineering behind the cone. I would look at getting rid of the rubber ring and use some kind of ribbed-like spars like spokes on a bike to help suspend the cone.
Thanks for sharing. Your intuition of the 5-10Hz is about right. It self resonates at 4 or 5 Hz and tries to tear itself apart if we approach those frequencies. The 30 Hz we played with corresponded to the frequency of the room where the windows rattled fairly well. The whole thing was made from stuff we had laying around in our shops, we've got about $350 in it aside from the equipment/parts we had on hand (The team members do research in power electronics and electric motors, not audio). The team that made it built it over a couple weekends. The cone material needed to be transparent so kids who were coming through for UW engineering expo could look inside it: UW-Madison Engineering Expo 2011. The poly carbonate cone material used is really a performance downgrade since poly-carbonate is heavy and not stiff enough for the size without any additional structural support (spokes or ribs or something like them). But we weren't going for performance, more so 4th and 5th grader satisfaction in a limited amount of time and $$$. This video above is some pre-event testing we did.
Daniel Ludois I'm no engineer so I wont pretend to be some know-it-all subwoofer guru but I do think you guys might be on to something! There could be a market for super sized super-powerful subs like this one albeit at about half the diameter. You may need your own custom amp too. Here's the scenario. In my dedicated theater I would hide my speakers behind an acoustically transparent screen. The center speaker would rest just above one of your "Wall buster Subs" (in-house name - The neighbor hater). I might even put a second one in the back behind a false wall. Bass bliss baby! If you guys do go for it and market a "Wall buster" product I just want one second generation sub 2nd from your top-of-the-line model. Deal? PLEASE? That being said thank you for your response and for being civil. We both know civility is in very short supply on the net these days. Think about it guys and think outside the box. You're all awesome...
FrakU2 If they cost any less than they did they would be even worse. "Not cheap" was the wrong words, *bad value* would have been better. As you can get better performance from more practical sizes of drivers for the same price, if that wasn't the case then 32" drivers would be flying off the shelves.
Dang.. I was hoping it would explode and send someone flying, followed up by someone saying softly "Rock 'n Roll". Nevertheless awesome achievement. Now to see if you can get it to push more than 12 ohms with a 4 foot excursion. That would be priceless.
That's totally insane!!! I LIKE IT!!! Is the cone able to move much to create insane Bass? It didn't look like it was moving much. That is such a cool woofer. Just goes to show that nothing is impossible if you have the will, knowhow, and the money for the parts. Thanks for sharing. :-)
Don't forget that you'd also need the $$$ to afford the extra electricity to run it. All I know is that it's just not big or powerful enough for MY tastes. I don't just want the windows to rattle, I want them to immediately burst every time I turn on the world's best bass song, which of course is by "Ace of Base". Everyone still loves that song! (Lol, just joking, everyone probably hates it by now).
@@HighlanderNorth1 Bigger woofer got higher sensitivity although this one is quite shit. Membrane is not stiff enough to even use it as big sub. Im sure the pro 24" would play louder, dig deeper, have better linearly and better everything
Don't you hate it when you realize how much you need something just by watching one video. I need that! Sounded like you guys were bumping some bass 305. Awesome!!
a club in cape town built the dancefloor over a single 35-ft cone from 2x 18" subs. then they replaced everything glass with plastic but the building started to disintegrate so it was dismantled. When you've built a mountain out of Peavey SP100 subs, you know what it means to move a lot of air.
Now build a concrete enclosure with proper accoustic properties to match the speaker,build it outside and get some specialy recorded tracks,with ultra low freq,well below the 20hz norm for demonstration, so people can feel the low frequency,would make a good crowd puller. Awesome build.
I'd still like to have a tunable passive radiator that big. Would have much better results than engineering a working subwoofer driver that large. Much easier to achieve and cheaper too. This was still insanely awesome and fun!
порой бывает даже 15 дюймовый активный саб и правильный короб, будет долбить лучше чем это шлак, это то же самое что пищалку запихать в коробку из под сока
Isso prova que tamanho não quer dizer muita coisa...olha o som estourado....o fato é que alto-falante por si só não entrega sonoridade boa e "forte"....é preciso que um alto falante consiga reproduzir todo espectro audível com qualidade e definição...aí entra outras questões tecnicas, como impedância, caixa acústica, sensibilidade, etc..
That's awesome, and I'm sure elephants would really enjoy it. For me, dual 15's in a well ported box is where it's at. 1000W amp on an inverter and an LPF, you're good to go.
That will give you way better bass than this ridiculous contraption. Certain speaker dimensions give unique sound signatures relative to their drivers. Dual 15's give some of the best bass response period. The cone surface area is an idea trade off between massive low end, and 'quick' attack. Coupling 2 drivers also gives you a 'sum' and concussion that a single driver just can't deliver. There is also an important secondary bonus that even audiophiles are not aware of. The natural resonance of a 15" is 60Hz-- which is also the natural resonant frequency of a 22" bass drum. The Famous Neve company of audio consoles deliberately uses 63Hz as their low end EQ for that very reason.
Nice, a very good idea for demonstrating how a speaker works to kids. It would have been awesome to learn and see how speakers work in elementary school =] Kind of reminds me of the amp/speaker from back to the future XD
@@Georgiyantyufeyev Yup! I ended up finding it a month ago the name is “Computer Bass (Rebel Science London Version)” unsure of what the other one is but at least I found that one! If you find the other one by all means let me know! Thanks for looking!
One would think that guys like you would be good at handling a camera. I think there was acutally one sharp clip in this. Nice work on the subwoofer though.
+Brian Correia sound and video are different things. One does not require the other to work, therefore you can master one without knowing jack about the other. le, why deadmau5 still uses album art for music videos.
What are you trying to tell me with this? The Video had a purpose, they wanted it to show the world or not? I would love to see you watch this clip with sound only...do you get it?
Brian Correia Just because something isn't good without the other doesn't mean it's impossible to do. All I would need to do is extract the .wav from this video and I could very easily do as you said. As I stated before, one does not require the other to be good, there are great silent films and great songs without m/v's to go along with. Though to be fair, neither the video quality or sound on this video is great, these guys's expertise is in engineering, not audio production and video editing. They're still fantastic at what they do and to say otherwise is ignorant.
My first comment was meant in a critical feedback way. I think there's nothing wrong with doing so. But your right, I get your point Xero, these guys are engineers, not videographers. Have a nice day
I'm very very disappointed.. The cone isn't rigid enough to be worth a damn. I understand that this is an educational tool and is mainly cosmetic, but considering how much power was being applied to this thing you really could have put more effort into the viability of the speaker itself. Massive opportunity wasted. You know, you can make carbon fiber sheeting relatively easily..
For educational purposes it was stated the cone must be see through.... Of course they could have made components more "rigid", but carbon fiber would defeat that purpose now wouldn't it? This was not a project being tackled as an opportunity to please the inept, this was an opportunity to show kids in real time the workings of a speaker, and well done I might add.
GREAT SCOTT: Marty McFly: You know, Doc, you left your equipment on all week. Dr. Emmett Brown: My equipment. That reminds me, Marty. You better not hook up to the amplifier. There's a slight possibility of overload. Marty McFly: Yeah, I'll keep that in mind.
LMAO!!! I'm thinking of the opening scene to Back to the Future, where Marty McFly stands in front of that giant speaker with his guitar. He strums a power chord and gets blown back against the wall. When he picks himself up of the floor, he just goes "wowwwww!"
remember seeing one called the tornado or something in the 90s it was supposed to go under your seats in the front but can't find anything on it anymore an never saw on other than in ads in mags an it was a rotating fan type impeller in a tube an looked powerful based on what I was reading
Just had a little extra effect for the video, right after the demonstration started, huge chunk of wet snow slid off from our roof shaking the house. Nice!
I think the servo drive subwoofers we installed back in the 80's probably exceed the SPL created by this one. Those subs only had 18" cones, but the excursion was over 2" up to about 60 Hz.
Kyle LaFountaine no if it was ported it would sound worse....you cant take a small sealed box and port it....duuhhh everybody in audio knows that. if it is gonna be ported it needs to be at least 2x the size of the sealed recommendations.....but this is small for a sealed box for this woofer my cousin had 2 24 in tantric shd and that box was the same as this size wize in ft3 a 70+ in woofer needs like 50 ft3 @ least..... this enclosure is prolly 20-30ft3
how can you know? Dont say the is sth like TSP. I know there is sth like that, and many people didnt understand what they describe. with a membrane that heavy you might be totally allright with what they did... anyway, i like URPS much better than usual design anyway^^
YourHipHopBeatsTV - | FREE Rap Beats | Hip Hop Instrumentals - 2015 I don't, and the reason I don't is because I put my good computer speakers in the welding shop I own so my employees can plug their phones into them and listen to the music they like.
YourHipHopBeatsTV - Hip Hop Beats | Rap Instrumentals Boom boom thump thump: the sound of the Negro. Hey dawg got my sub and my shitty overpriced no soundstage beats by dre yeah feel da bass nigga.
The sad thing about this woofer, is that unless we were in it's presence, none of us can truly appreciate it.
@Smooth Move 😂
You are damn correct
Swayed my chandelier through my smartphone speaker.
@@SilentKnight43 😂😂😂
cannot even take it out of that room in one piece
I’m glad these guys spent all this time and effort, recorded it, and uploaded it to TH-cam so I could listen to it quietly on my iPhone in a room where the air conditioner is louder than this audio.
literally describing me rn 💀
Who would use or need this ?
@@willjimenez9013 Description says it was made to teach elementary kids how speakers work (hence it was clear so you could see the parts, and extra big so kids could see everything at an easier scale and huddle around it).
Its just like all those jet engine turbine cutaways you see at museums or schools/universities (many are actual decommissioned jet engines), its for educational purpose.
@@jakegarrett8109 that's a good investment that will give back more of a return
@@brobelookinglike I want to be on a boat too…
"what's the max RMS input power of that sub?"
*"about 2Hp"*
2 HP = about 9000 watts. So no.. NOT closer to 10 HP.. Closer to 2.
@@tdh7865 you know, uh, any efficiencies in any currents, also Google can say whatever the hell it wants when I turn on a two horsepower motor I know what the hell kind of power consumption I clearly observe with multiple different instruments.. why don't you look up what kind of power inverter it takes to Start a 2 HP horsepower motor.. 🤣🤣😎 I know for a damn fact it's over 7,000. If I hold the shaft still on the motor consumes more power. Go ahead and make another comment I was going to guess $8,500 but $9,000 is cooler. Of course you wouldn't know about anything that is cool it seems.
@@tdh7865 I remember when I used to be like you, going instantly research a bunch of stuff and then regurgitate it. This is the real world buddy. I know motors like I know the back of my hand my entire property and all of my work is 100% off grid solar powered. I happen to have a 2 horsepower well pump that can be ran on 110 or 220🤣🤣 I'm running it on 119 at the moment. It takes over 8,000 Watts starting current. You have valid points but you're making assumptions that I'm guessing shit and I'm repeating what the fuck I see with my own eyes in front of me. Go try to school someone else because I would demolish you in electrical engineering. I guarantee you there's not 8,000 Watts going into that subwoofer you got to be a complete novice to believe that nonsense it's just something that I stated it's a fucking TH-cam comment. 🤣🤣 I run 3200 true Watts through 4 12-in subwoofers custom everything and I can't even turn the shit up because it breaks my windows and I can't see straight. If you put even 4,000 w into that sub it would destroy itself.
@@tdh7865 You crack me up smalls. 🤣🤣You sound like you need some hobbies. Horsepower has everything to do with motors. Especially electric motors. I've got you switching your numbers all around you probably doing all kinds of research Schooling yourself. 😂😂
@@1998keagan1 horsepower has everything to do with horses, as in the amount of work the can do. Torque is a unit of force, horsepower is work. Specifically, the amount of work done when moving 33,000 lbs 1 foot in 1 minute. The watt is literally named after a guy who helped develope the steam engine... I mostly made this comment so I could find this video again... but yeah, put a little more horsepower into your troll game (or convert it to watts I really don't care 1hp=746W)
It’s almost like I’m watching back to the future for the first time again. Sweet build. You are the man!!
Yea I was waiting for him to plug his guitar into it and strum a chord
I was thinking the same thing, even tried looking for an appropriate gif till i remembered youtube doesn't support gifs
I was waiting to see Michael J. Fox come flying across the room!
I was just thinking the same. Lol 🤣
You wild 🤣🤣🤣🤣
LMAO no doubt!💯
I knew I would find this in the comments and I was not disappointed.
Instead, it sounds like a crown vic decklid vibrating to the beat.
When your wife says only 1 sub in your car
Yessss 😭😭😭
When you realise it's bigger than the car...
dang
@@nirvanacirclejerk so big that now you have to buy a truck...
Not a pickup one but the semi one ...😆
@@Dragon_Warrior7625 that thing is just as wide as a semi😂
Nobody:
honda civics at 3am. 😂
Jajajaj
lmao
@@fartsoundeffect5013 yes
Damn you stole my comment.
Nah bro. Civics got that weight reduction , they don't want that sub
The words "Hello, Mcfly!" come to mind.
I think it's effectively a small subwoofer, just because of how weak the membrane is. It moves just the inner part, while the rest is bending instead of moving in the same way.
Yeah, I thought that too.
If this sub would work properly then he couldn't stand in front of it like nothing happens😂
@@s33saudios I stood in a hall with two subwoofers sized around 1 meter and believe me I couldn't get closer than 10 meters without it being uncomfortable due to violently shaking my inside (and outside) organs
There's absolutely no way that flimsy acrylic come could transfer the energy from the coil assembly!
A complete waste of time!
@@tomclanys
You don't want your outside organs shaken as violently as possible?
Weird!
@@Allangulon I think you don't understand that
Did anyone else suddenly remember that amp scene from back to the future when they saw this?
That's exactly what I thought when I saw the title! :-D
gaptoofgranny yep
+gaptoofgranny yup thats the one
+gaptoofgranny yess i remeber, that was so epic
+gaptoofgranny YEP!! I was actually wondering if that was the inspiration...the equipment they're powering it with is also like what Doc Brown would use....lol
wow, back to future speaker
th-cam.com/video/aP_Z3s8Zas0/w-d-xo.html
First thought
Seems like you’d need an insane amount of rigidity for such a loud speaker to reproduce accurately
And even if it would be accurate, the room can not handle it unless you build a custom room full of extended bass traps.
It brings so much memories from Back To The Future
Love that you can build a 76" sub powered by a three phase power supply but you can't get your camera to focus on the darn thing!
Audio engineers do not make good cameramen… myself included
The camera lens is vibrating with the base.
reflections and auto focus are fuck
Its because of the power of the sub the autofocus cant withstand it.
We all take for granted how good of a camera everybody has in their pocket these days.
Do you think it would fit in my Honda? - Moog
LOL!!!!!!! XD
No, but you could fit your Honda in it
Or you could put the speaker on top of the car
Owiko7 umm, if you put that on your car, then it was set to loud, it will hurt your ears. :/
Ramil Hernandez the joke flew over your head.
I was honestly interested in how far you've came since this as Graduate student. I see your an Associate Professor now and gotta say that's pretty amazing.
Wish I had 1 of these to let my neighbours know when I'm in the house, I think it would take our relationship to the next level.
hahaha
LMFAO!!!!
colintx800 lel
colintx800 with this sub everyone will know that you are in the city
I have a feeling that the relasonship isn't so good already.
Just wait till some ricer finds a way to fit this into their car...
*Smiles with joy*
+monkeymafia729 This comment made my fucking year.
+monkeymafia729 Will this fit my honda?
Ali Ahadi Yes, all you would have to do is stretch the fuck out of it, widen the body so it takes up 6 traffic lanes, make it no longer street legal, and the best part is, it no longer fits in your garage, or on the street outside your house. All for the sake of putting a woofer in.. Great idea, right?
TheUnknownLucky MCM much?
When you’ve seen back to the future to many times.....
hahahaha,that seen came to my mind the moment i saw this sub woofer.
Indeed
Shame they didn't put Power of love on :)
@@mariomatovina4 lol seriously
@@talhahabib339 legit
This is the very moment when the amplifier should have been designed in a “back to the future” style.
Some kid is gonna find a way to put that on top of his Jeep
then it would be a donk lowrider
Probably Jeremy Clarkson
@@biged3175 Without a doubt! lmao
Nah Somebody will probably put it in an old 1990's Geo Metro 3 cylinder hatchback 😂
Bro, Doc Brown was doing this back in the 80’s.
Just the fact that they used Bass 305 to test this gigantic woofer is SICK! Nice choice of tunes :)
hell yes. I still have my og Bass 305 CD from the 90's, sadly without a decent system to play it on though :(
Yes, hadn't heard it since around 2001 lol
Lol I thought I heard techno bass crew there..
Haha yeaaah! Found this CD at a dollar thrift shop and instantly became a fan!
What’s the song?
Great Scott… that woofer seems capable of producing 1.21 Jiggawatts and tearing the very fabric of the time space continuum while blowing every ear drum from here and now back to 1985
Despite the obvious purpose, the membrane fluctuates quite well, and if the development of the diffuser was entrusted to the aviation design engineers, they would bring the system to close to perfection, and this would become an artwork.
Carbon fibre cone?
@@ScroganNot just a carbon fiber cone (it has nasty resonance modes), but structured to take into account the architectural stiffness and intrinsic speeds of sound in the main materials used. It's all quite complicated. But in fact, you need to have the most rigid design with a minimum mass and well-suppressed internal vibration modes.
Не просто конус из карбонового волокна (он обладает неприятными модами резонансов), но и структруированный с учётом архитектурной жёсткости и внутренним скоростям звука в основных используемых материалах. Это всё достаточно сложно. Но по сути нужно иметь максимально жёсткую конструкцию с минимальной массой и хорошо подавленными внутренними модами колебаний.
@@Scrogan fiber*
If you did all of that it would still suck. All membranes and resonant air space enclosures have an 'ideal' combination of size, cone surface area and electromagnetic properties of the motor. This applies not only to speakers but, musical instruments. For example a 14" x 22" kick drum has a natural resonant frequency of 60Hz. Even changing the heads will still cause that instrument to maintain it's natural resonance. The larger the diaphragm the slower and more inarticulate the response. The larger the surface area, the more the upper range 'beams.' That's why tweeters are small.
@@keithmoriyama5421 That's solved with using a multiple-voice coil setup, distributed radially, in combination with a more rigid substrate. Apply additional coils at resonant negative zones, and with some delay tweaking individually, you can harmonize the entire surface.
Essentially, yes it would suck, if you **only** use a single coil. Think outside the box next time. Thought this was engineering, not insanity.
If it's too floppy to move at once, grab it in more places and shake it harder.
To those arguing over how many HP this speaker is capable of handling, 1HP is just under 746 watts equivalent. And motors on things like compressors take far more current (and thus watts) to start than they do to run, that is why they typically have large starting capacitors.
Thanks for the great video.
Hi big fan here
An open flame or a smoke trail in front would aid in perceiving the power :) Awesome rig.
That's some Marty McFly shit right there! =)
Haha, no shit. It's a crazy Sub
I bet it's the same speaker from.back to the future
Robert Mathis xD
Robert Mathis
L😂L
m.quickmeme.com/img/c6/c6d512513cf240362d0d3fa22d5415ab19072034a32323be237806a5ef419e92.jpg
th-cam.com/video/aP_Z3s8Zas0/w-d-xo.html
If you really want to blow their minds, do the same output with an 8" 4ohm sub into a large bass-horn. and show them how passive amplification works. :)
@@readiboardii3873 that will create a black hole
We run 21in drivers in 14ft horns and its great
I do effectively the same thing when i toss my Bluetooth speaker into a large box😉👍
7000W into 8 ohms are 236Volts at the terminals. thats really mains voltage. To test the speaker , simple plug it into a socket and wreck your home.☺
Back to the future........
kkkkkkkkkkkkkkkkkkkkkkk
verdade,de volta para o futuro
true,back to the future
Antonio Pisano ya I was just thinking that
Needs a flux capacitor next.. Custom made of course.....
Gain is 11 hahaha funny
Antonio Pisano use three dots
it would be nice to see all the sensor readings spec's , pressure reading's etc ,etc. Awesome job U freaky Creators- The World needs more people like yall in it.
That thing is pure madness! it needs it's own nuclear power plant but I thought it would get closer to 5-10hz. Mid 30's is a bit disappointing. I thinks it needs some re-engineering behind the cone.
I would look at getting rid of the rubber ring and use some kind of ribbed-like spars like spokes on a bike to help suspend the cone.
Thanks for sharing. Your intuition of the 5-10Hz is about right. It self resonates at 4 or 5 Hz and tries to tear itself apart if we approach those frequencies. The 30 Hz we played with corresponded to the frequency of the room where the windows rattled fairly well.
The whole thing was made from stuff we had laying around in our shops, we've got about $350 in it aside from the equipment/parts we had on hand (The team members do research in power electronics and electric motors, not audio). The team that made it built it over a couple weekends. The cone material needed to be transparent so kids who were coming through for UW engineering expo could look inside it: UW-Madison Engineering Expo 2011.
The poly carbonate cone material used is really a performance downgrade since poly-carbonate is heavy and not stiff enough for the size without any additional structural support (spokes or ribs or something like them). But we weren't going for performance, more so 4th and 5th grader satisfaction in a limited amount of time and $$$. This video above is some pre-event testing we did.
Daniel Ludois I'm no engineer so I wont pretend to be some know-it-all subwoofer guru but I do think you guys might be on to something! There could be a market for super sized super-powerful subs like this one albeit at about half the diameter. You may need your own custom amp too.
Here's the scenario. In my dedicated theater I would hide my speakers behind an acoustically transparent screen. The center speaker would rest just above one of your "Wall buster Subs" (in-house name - The neighbor hater). I might even put a second one in the back behind a false wall. Bass bliss baby!
If you guys do go for it and market a "Wall buster" product I just want one second generation sub 2nd from your top-of-the-line model. Deal? PLEASE?
That being said thank you for your response and for being civil. We both know civility is in very short supply on the net these days.
Think about it guys and think outside the box. You're all awesome...
FrakU2 There are already companies that make 32" subwoofers. They aren't cheap (or really any good) so there isn't much of a market ;)
bassl0va Doesn't that say it all? NOT cheap and NOT very good. You guys have an opening here. Go for it!
FrakU2 If they cost any less than they did they would be even worse. "Not cheap" was the wrong words, *bad value* would have been better. As you can get better performance from more practical sizes of drivers for the same price, if that wasn't the case then 32" drivers would be flying off the shelves.
I guess you guys aren't ready for that yet, but your kids are gonna love it!
It's insane because I got to see this exact sub doing it's groove in school once.
⚠️WARNING⚠️: DONT let Marty McFly alone with that thing.
"Bass i love you" on this would be INSANE
It’s an amazing experiment.
Probably too little excursion due to a limiting surround.
I know guys that would stick something like this in their car without a second to lose
I don't normally watch the ENTIRE video that people post of builds, but, this. Wow. Absolutely beautiful.
No one remembers that scene from ‘Back to the Future’ but you know what you have to do.
Dang.. I was hoping it would explode and send someone flying, followed up by someone saying softly "Rock 'n Roll".
Nevertheless awesome achievement. Now to see if you can get it to push more than 12 ohms with a 4 foot excursion. That would be priceless.
hahaha i was looking for someone to make that reference in the comments the moment i saw how big the sub was
This has back to the future vibes 😂
Fr
That's what I'm sayin
That's totally insane!!! I LIKE IT!!! Is the cone able to move much to create insane Bass? It didn't look like it was moving much. That is such a cool woofer. Just goes to show that nothing is impossible if you have the will, knowhow, and the money for the parts.
Thanks for sharing. :-)
Don't forget that you'd also need the $$$ to afford the extra electricity to run it. All I know is that it's just not big or powerful enough for MY tastes. I don't just want the windows to rattle, I want them to immediately burst every time I turn on the world's best bass song, which of course is by "Ace of Base". Everyone still loves that song! (Lol, just joking, everyone probably hates it by now).
@@HighlanderNorth1 Bigger woofer got higher sensitivity although this one is quite shit. Membrane is not stiff enough to even use it as big sub. Im sure the pro 24" would play louder, dig deeper, have better linearly and better everything
I'm not a specialist, I know it's just experimental but I think the size of the box and duct might improve the test experiment hehe
Don't you hate it when you realize how much you need something just by watching one video. I need that! Sounded like you guys were bumping some bass 305. Awesome!!
best of bass 305!!! awe the memories... into the future, now have you heard it backwards, was my favorite
“My equipment. That reminds me, Marty. You better not hook up to the amplifier. There's a slight possibility of overload.”
"Yeah, I'll keep that in mind..."
Legend has it this guy is now working on a time machine built into a DeLorean.
Would like to see bass I love you on that...
Pond's drrfp
Pond's same here
bass I love you does nothing to speakers
Probably needs 5k+ more to get going good
sea bass
cruise around with this smashing peoples windows
More like EVERYTHING.
+Fernando Felizzia this is gona cause the end of the world maybe
Harjot Nyotta *obviously*
The output is trash... its all for show, not performance.
There is a reliability test lab in Quebec that used large subwoofers (Hartley 24", if I recall) for shaker tables for vibration testing.
a club in cape town built the dancefloor over a single 35-ft cone from 2x 18" subs. then they replaced everything glass with plastic but the building started to disintegrate so it was dismantled. When you've built a mountain out of Peavey SP100 subs, you know what it means to move a lot of air.
Try with Bass I Love You... 😂😂😂
YES
Yeah. Good idea!
the speaker isnt built for bass or sound quality its actually for teaching younger people
Ahimsa Rizky the room would be obliterated
Why this song?
It gives 1000 other better Subwoofersongs.
is there an amazon link so i can put 2 of these in my car? Kappa
Try it
the coil is all the way too small
Poop
the cone is too weak too, its just for fun.
In short, they did a great deal of crap.
Tonny Cassidy that's what she said
Now build a concrete enclosure with proper accoustic properties to match the speaker,build it outside and get some specialy recorded tracks,with ultra low freq,well below the 20hz norm for demonstration, so people can feel the low frequency,would make a good crowd puller. Awesome build.
I'd still like to have a tunable passive radiator that big. Would have much better results than engineering a working subwoofer driver that large. Much easier to achieve and cheaper too. This was still insanely awesome and fun!
I read this as "I'd still like to have a turntable massive"
😎
@@Monstermagick A 100in record for the whole collection 😂
😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭
порой бывает даже 15 дюймовый активный саб и правильный короб, будет долбить лучше чем это шлак, это то же самое что пищалку запихать в коробку из под сока
Русские!Ура!
Согоасен
Isso prova que tamanho não quer dizer muita coisa...olha o som estourado....o fato é que alto-falante por si só não entrega sonoridade boa e "forte"....é preciso que um alto falante consiga reproduzir todo espectro audível com qualidade e definição...aí entra outras questões tecnicas, como impedância, caixa acústica, sensibilidade, etc..
This has got to be the most accurate bass I will ever hear
You’re suppose to stand in front of it with a guitar with all the amps turned up to maximum!
Are you Marty Mcfly by chance?
Lmao that was my exact thought XD
Lol me too
at least they didnt blow it with a guitar riff
***** lol
damn you beat me to it
“So wait a minute, are you telling me it’s 8:25?”
“Precisely.”
“Damn, I’m late for school!”
That's awesome, and I'm sure elephants would really enjoy it. For me, dual 15's in a well ported box is where it's at. 1000W amp on an inverter and an LPF, you're good to go.
That will give you way better bass than this ridiculous contraption. Certain speaker dimensions give unique sound signatures relative to their drivers. Dual 15's give some of the best bass response period. The cone surface area is an idea trade off between massive low end, and 'quick' attack. Coupling 2 drivers also gives you a 'sum' and concussion that a single driver just can't deliver. There is also an important secondary bonus that even audiophiles are not aware of. The natural resonance of a 15" is 60Hz-- which is also the natural resonant frequency of a 22" bass drum. The Famous Neve company of audio consoles deliberately uses 63Hz as their low end EQ for that very reason.
R.IP 🔊🔊🔊🔊
Nice, a very good idea for demonstrating how a speaker works to kids. It would have been awesome to learn and see how speakers work in elementary school =]
Kind of reminds me of the amp/speaker from back to the future XD
Wow, someone remade the giant subwoofer from back to the future. :)
Make a giant water proof one and put it in a big pool
oh god
A1 LegiiT instant tsunami
Back to the future all over again.
xD
I thought of the exact same thing as soon as the video started! :)
Hey minecraft noob.
Lol you have 3 subs xD
Now this is cool! That 8kw amp tho damn that's some power!
Out of curiosity what are those two songs you guys used? Those are actually kinda fire
Yeah honestly those songs are a bop. If anyone does know please say!
I think it was, "Tech Master PEB." Any of his tracks are good. Old school from the late 90's.
@@toebeeone cool! Thanks!
Someone mentioned elsewhere in the comments that it’s Bass 305. I’m looking into it right now :)
@@Georgiyantyufeyev Yup! I ended up finding it a month ago the name is “Computer Bass (Rebel Science London Version)” unsure of what the other one is but at least I found that one! If you find the other one by all means let me know! Thanks for looking!
Did you ever calculate the Thiele-small parameters of the sub? I am very interested in knowing what the BL and xmax is.
Ah yes, words.
@@tsuica9304 Yep........
Looks like the xmax is .01 inch since the cone is just flexing
X-Max is 0.1 mm
And then these 3 scientists set the woofer to 110Hz at a full 8000w and a portal swallowed them up never to be seen again.
How about you play a bass boosted dank meme with the entire speaker's volume completely up. Maybe another universe could hear it.
Cashe me owside hau bau dah
The wing nuts will fall of in 2 seconds
@@halitha2012 r/whoosh
One would think that guys like you would be good at handling a camera. I think there was acutally one sharp clip in this. Nice work on the subwoofer though.
+Brian Correia
sound and video are different things. One does not require the other to work, therefore you can master one without knowing jack about the other.
le, why deadmau5 still uses album art for music videos.
What are you trying to tell me with this? The Video had a purpose, they wanted it to show the world or not? I would love to see you watch this clip with sound only...do you get it?
Brian Correia Just because something isn't good without the other doesn't mean it's impossible to do. All I would need to do is extract the .wav from this video and I could very easily do as you said.
As I stated before, one does not require the other to be good, there are great silent films and great songs without m/v's to go along with.
Though to be fair, neither the video quality or sound on this video is great, these guys's expertise is in engineering, not audio production and video editing. They're still fantastic at what they do and to say otherwise is ignorant.
My first comment was meant in a critical feedback way. I think there's nothing wrong with doing so. But your right, I get your point Xero, these guys are engineers, not videographers. Have a nice day
How much would you charge to install one in my Peel P50 car?
Dude they can't get it right in a laboratory how do they do it in a car?
Marty will love it!!!
I'm very very disappointed.. The cone isn't rigid enough to be worth a damn. I understand that this is an educational tool and is mainly cosmetic, but considering how much power was being applied to this thing you really could have put more effort into the viability of the speaker itself. Massive opportunity wasted. You know, you can make carbon fiber sheeting relatively easily..
For educational purposes it was stated the cone must be see through.... Of course they could have made components more "rigid", but carbon fiber would defeat that purpose now wouldn't it? This was not a project being tackled as an opportunity to please the inept, this was an opportunity to show kids in real time the workings of a speaker, and well done I might add.
I'm disappointed in your stupidity and uselessness
0:01 like in the film of Back to the Future!
GREAT SCOTT: Marty McFly:
You know, Doc, you left your equipment on all week.
Dr. Emmett Brown:
My equipment. That reminds me, Marty. You better not hook up to the amplifier. There's a slight possibility of overload.
Marty McFly:
Yeah, I'll keep that in mind.
If the speaker cone wasn't made out of plastic, it wouldn't rattling as much. You guys had one job to push air back in forth.
ВОТ ТАКИЕ, КОЛОНКИ ДОЛЖНЫ БЫТЬ У КАЖДОГО ШКОЛЬНИКА, И ЧТОБЫ НА МАКСИМАЛЬНОЙ ГРОМКОСТИ))
в каждой многоэташке
LMAO!!!
I'm thinking of the opening scene to Back to the Future, where Marty McFly stands in front of that giant speaker with his guitar. He strums a power chord and gets blown back against the wall.
When he picks himself up of the floor, he just goes "wowwwww!"
The song at 1:40 is bass America “welcome to the future”
I can not find this song
Thank you
its actually Into the Future [Berlin Radio Interpretation] by bass 305.
THANK YOU
@@kylergallet3502 and Thank you too.
This reminds me of Doc Brown's lab/living quarters in Back To The Future(1985)
words cannot describe how bad i want something like this
With some tweaks, this could demolish a house.
still sounds better than beats
True!
The real test would be the Ying Yang Twins pulsing through that thing…
imagine using this giant beast as an guitar or bass amp speaker
Some of the video's of rotating subs look very interesting - so basically you modulate the blades of a large fan.
remember seeing one called the tornado or something in the 90s it was supposed to go under your seats in the front but can't find anything on it anymore an never saw on other than in ads in mags an it was a rotating fan type impeller in a tube an looked powerful based on what I was reading
0:13 3-phase power: that's badass
As a mechanical engineer wtf phase means 😂
Just had a little extra effect for the video, right after the demonstration started, huge chunk of wet snow slid off from our roof shaking the house. Nice!
Your power meter looks like a vu meter when the voltage was dropping
what's the beat at 1:43 called ?
bass America “welcome to the future”
Damm, I wanted them to connect an electric guitar to it 🎸
I think the servo drive subwoofers we installed back in the 80's probably exceed the SPL created by this one. Those subs only had 18" cones, but the excursion was over 2" up to about 60 Hz.
enclosure is wayy to smal
And needs to be ported.
Kyle LaFountaine no if it was ported it would sound worse....you cant take a small sealed box and port it....duuhhh everybody in audio knows that. if it is gonna be ported it needs to be at least 2x the size of the sealed recommendations.....but this is small for a sealed box for this woofer my cousin had 2 24 in tantric shd and that box was the same as this size wize in ft3 a 70+ in woofer needs like 50 ft3 @ least..... this enclosure is prolly 20-30ft3
hittin-low_150db+ He said "and."
how can you know? Dont say the is sth like TSP. I know there is sth like that, and many people didnt understand what they describe. with a membrane that heavy you might be totally allright with what they did... anyway, i like URPS much better than usual design anyway^^
The enclosure was built 8'x8'x2'.... It was way too small but, the budget kinda restricted it.
Sounds like crap through my 3" computer speakers.
wonder why?
YourHipHopBeatsTV - | FREE Rap Beats | Hip Hop Instrumentals - 2015 I don't, and the reason I don't is because I put my good computer speakers in the welding shop I own so my employees can plug their phones into them and listen to the music they like.
YourHipHopBeatsTV - | FREE Rap Beats | Hip Hop Instrumentals - 2015 They have my good RF speakers with a nice, powered sub, and I pay them well.
YourHipHopBeatsTV - | FREE Rap Beats | Hip Hop Instrumentals - 2015 I paid my manager $100k in pay and benefits last year.
YourHipHopBeatsTV - Hip Hop Beats | Rap Instrumentals
Boom boom thump thump: the sound of the Negro. Hey dawg got my sub and my shitty overpriced no soundstage beats by dre yeah feel da bass nigga.
999,666 views... ILLUMINATI
Bob Joe 1.573.765 views... +1 ME
So that's what the neighbors have been up to.
Back to the future
thats exactly what i was thinking lol
Same here.
Ernesto Avilez Same as me.
Bass 205 playing into the back too the future mighty speaker.