Giant Subwoofer Video
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- Опубліковано 10 бер 2014
- This was a demonstration built by graduate students at the University of Wisconsin -Madison in 2011. It's purpose was to be physically large so elementary school kids could look inside while it was running and illustrate the how a speaker works on a grand scale (hence a transparent cone). Although powerful, it was not designed to be competitive with state of the art sub woofer systems or be high audio quality. Documentation of the build process may be found at: ludoislabs.com/giant-speaker/
- Наука та технологія
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 UA-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
@@ilike.men_ I want to be on a boat too…
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
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.
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😂
The words "Hello, Mcfly!" come to mind.
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.
"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 UA-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)
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
This is the very moment when the amplifier should have been designed in a “back to the future” style.
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
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
An open flame or a smoke trail in front would aid in perceiving the power :) Awesome rig.
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.
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.
wow, back to future speaker
ua-cam.com/video/aP_Z3s8Zas0/v-deo.html
First thought
It's insane because I got to see this exact sub doing it's groove in school once.
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!
It brings so much memories from Back To The Future
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.
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.
holy The Prodigy ... This woofer CRAZY!!! I LIKE IT!!
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
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
Straight up Back to the future setup right there.
I returned to this masterpiece 9 years later, I wonder how this sub is doing now I really wish I could se it irl
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?
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.
Legend has it this guy is now working on a time machine built into a DeLorean.
Look at that “Back to the Future” masterpiece!
Hit it Marty!!!
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?
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
ua-cam.com/video/aP_Z3s8Zas0/v-deo.html
Now this is some crazy back to the future Doc Brown shit
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.
Bro, Doc Brown was doing this back in the 80’s.
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.
This brings me way back to the future!
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.
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.
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!!
Sweet. Going to have to get one of these for my 91 Civic hatchback. Homies at the next bush party are going to go nuts!
I heard some Bass 305. Good testing material!!
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
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 am so glad I have the subwoofer app so that I can hear those low frequencies
Back in the day, a couple MTX 15" subs with a good 100 watt amp would vibrate the walls. I can't even imagine this.
"Bass i love you" on this would be INSANE
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.☺
Someone finally found Doc’s workshop
Lol, I hope that documentation covers all the used soundtracks! Mainly the last one is really interesting.
Don't Stop The Music · Techmaster P.E.B.
Bass Computer 2000
℗ 1998 Newtown Music Group
Released on: 1998-08-29
best of bass 305!!! awe the memories... into the future, now have you heard it backwards, was my favorite
Thanks for the great video.
Hi big fan here
No one remembers that scene from ‘Back to the Future’ but you know what you have to do.
Naming the amp "spinal tap" is just the icing on the cake.
This has back to the future vibes 😂
Fr
That's what I'm sayin
No possible way that's audiophile quality, w/the small enclosure and massive cone breakup. But, noble cause, and nice work! Thanks for sharing.
Marty and Doc would be proud.
Hmm. Some Bass 305 at the end of the video. Brings back some 90's cruising memories for me.
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
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
the camera microphones will never do it justice. i bet it throbs so hard. lol
Blue Man group in Boston used a drum about that size. Awesome bass. Myth Busters had an episode where they try shattering the car's windows by using a massive speaker powered by an engine.
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
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
my entire body is tensing up at the thought of being that room
Make a lot more of those giant subwoofers then it will be the world’s most loudest bass sound ever!
I guess you guys aren't ready for that yet, but your kids are gonna love it!
I don't normally watch the ENTIRE video that people post of builds, but, this. Wow. Absolutely beautiful.
People complaining about this sub woofer.
Marty Mcfly: Hold my guitar 🎸
"That reminds me, Marty. You better not hook up to the amplifier. There's a slight possibility of overload."
There is a reliability test lab in Quebec that used large subwoofers (Hartley 24", if I recall) for shaker tables for vibration testing.
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
Marty will love it!!!
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.
“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..."
I love that your custom amp is named Spinal Tap 😂
one of my fav videos of all time
Wow, someone remade the giant subwoofer from back to the future. :)
I could really feel the bass coming out of my laptop speakers.🤣 You definitely built power supply to look like the BTTF one.
I kept waiting on Marty and Doc to show up.
"By the way Marty, you better not hook up to the amplifier. There's a slight possibility of overload"
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"
😎
@@mattcrouch8984 A 100in record for the whole collection 😂
😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭
“So wait a minute, are you telling me it’s 8:25?”
“Precisely.”
“Damn, I’m late for school!”
Thats heavy doc
"The bluetooth device is ready to pair"
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.
I bet a single 18 would have better output.
Yup it's more like a tweaker than a sub
I have seen much small subs with much rich and good sound than this shit
@@chfsunf1ower296 That's odd I've never seen another anime fan on videos like this.
@@crumblingdarknesssphere604 😂 well nice to meet you
@@chfsunf1ower296 Like wise.
You realize you're listening to this through your own audio so you can't hear how it sounds IRL?
This gives me back to the future vibes..
This is peak balance according to audiophiles.
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..
looks like the speaker from back to the future ;D
that's what i was thinking too
When the police come because the neighbours made a noise complaint and you're tryna convince them they're overreacting with that thing looming in the back ground
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.
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
You’re suppose to stand in front of it with a guitar with all the amps turned up to maximum!
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.
That thumbnail had me thinking back to the future
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