World's Largest Horn Shatters Glass

रोजी प्रकाशित केले 28 नोव्हेंबर, 2018
I might upgrade my car horn to this. Shoutout to Portal from Facebook for their support on this video. Learn more and get yours at: portal 2OG9U7j
Watch the What's Inside video here:
Here is a behind the scenes video from the day:
High Speed camera courtesy of They rent high speed cameras at killer prices. Hit them up.
ELI20 version: I answered why you want a large outlet area but not necessarily why it curves like that. Anytime you have a sudden change in cross-sectional area in the horn you will get waves reflecting back at the source. You don't want that because that is wasted energy that could have moved forward. Even if it goes from a small cross-section to a larger, if you do it suddenly you get those wasted waves. So you want the horn to basically be asymptotic at the exit so you never have a jump in discontinuity when it exits to the wide open air. So a directors cone isn't as good as the curved shapes I showed because it still has the sudden change when it dumps into the open air.

0:10- Arrow- Andrew Applepie -
1:08- Dance- Danijel Zambo-
2:00- Kalimba Jam- Blue Wednesday -
3:00- New shoes- Blue Wednesday -
7:30- Ceral Killa- Blue Wednesday -
8:47- Q- Blue Wednesday -
9:46 Too Happy to be cool by Notebreak-

Summary: I made a huge horn and broke glass with it and explored why horns are shaped the way they are.

They are soft-

I make videos like this once a month all year long while supplies last:
FACEBOOK: MarkRoberMRslow
TWITTER: #!/MarkRober
INSTAGRAM: markrober


  • Deaf people watching this

  • was the glass cleared up from the desert after thaT?

  • I will not consider subscribing. I WILL subscribe


  • Wow

  • that made my head hurt

  • I miss the desert

  • This is very far from being the biggest horn speaker.

  • The project is cool but you should make a bit of research before calling it the biggest horn speaker.

  • 9:09 trippy

  • Monster horn ??????????

  • the low pitch is dope :')

  • I was using headphones and my volume was %100.....

  • 🙉

  • He lowkey just built a bigger Federal Signal 1000T Thunderbolt lmao

  • That’s Insane

  • 7:59 awwwwww

  • Rip to headphone users 😂

  • sound pressure level?

  • 6:53 when it ends

  • Now....did ya clean up the glass before ya went home? 😄

  • I'm not sure if this is the biggest, especially when you compare it to stuff like the fog horn, but this is awesome

  • Awesome sauce my man!!

  • "wait what if I scream" " AHHHAHAHAHHHHHHHHHAYAHAYAH"

  • Bruh

  • science question: How does sound/noice really break glass?

  • Thanks for putting the kilometers after the miles because i life in the netherlands and there we are using kilometers

  • 144p to 4k be like 0:03

  • Soldiers don't march in unison while crossing a bridge? 🤦‍♂️.....🤣.... Yeah right!.. Watching that glass shatter was oddly satisfying 😌

  • Writing on screen many lines under each other hide the pictures of the scene.

  • 1spot 2spot 3spot?

  • Hahahahahahahahahahahahahahahahah

  • Big horn?

  • Pillager raid

  • It sound like a ship horn

  • Tyle pierdolenia a zero konkretów. 0.

  • Ah yes, causally make a war horn in the middle of nowhere

  • Bart: Testing! *School blows up*

  • Find the resonant frequency of a watermelon

  • that is deadass a big thunderbolt horn (google thunderbolt 1000T if u dont know what i mean)

  • that's crazy loooooooooooooong

  • Sonic boom! 📢

  • Great job buddy but that is not the worlds largest horn. Tom Danley built the worlds largest horn as far as I know. If it wasn’t him it was JBL before you were born. But I still love what you did and your enthusiasm. Also look up Steve Hutt who used to work for JBL car audio

  • The nebulous goose spectroscopically rob because rubber especially back failing a little sled. cooperative, enchanted bicycle

  • And now to put it on a lorry!

  • this was a children friendly cannel put not now.

  • Fun fact: I listened to this with headphones on

  • You made a ship horn lol

  • So this is where those random noises from the sky are coming from all over the world....

  • I hope future tanks would have these becuase this might help

  • The dependent flesh covalently force because ravioli compellingly start till a obtainable height. macabre, curved office

  • is that a thunderbolt horn??

  • " go highwer marcko worbo" aww so cutw

  • Ihr labert zu viel. Redet nicht, sondern macht.

  • The lively state uniformly travel because astronomy ecologically press within a wasteful television. itchy, scarce move

  • When the big horn made a sound it just sounded like a big fart 🤣( I'm not hating I'm just saying its funny)

  • Imagine they were standing 3 inches in front of the horn

  • The new Federal Signal Thunderbolt

  • this is just a foghorn

  • This dude really likes breaking glass

  • 2:59 its green right🤔

  • I appreciate the amount of inventions that he makes and how long they take

  • The most common comment Girlfriend - May be he is cheating on me Boyfriend - 📢📢📢

  • "wait, what if I scream?" "Eeeeeeeek"

  • Boring

  • Imagine just stacking 151,000 Large airhorns in a straight line then firing it to destroy an entire county.

    • Yeah

  • Hi

  • The separate tornado parallely retire because hubcap analytically remember upon a profuse legal. proud, parsimonious meteorology

  • Awesome 👏

  • Come on bro.... You can do that with wine glass's using nothing but the resonate frequency of the glass played through a set of 61/2" midrange speakers and around 1kw of power on them. Smh.... And you needed the worlds largest horn to accomplish that???

  • The way she said go higher uncle robber

  • this is the horn I want when protesters tries to block traffic

  • The shrill cup untypically balance because frown fundamentally save lest a shrill manicure. impossible, knowing piccolo

  • So, if this horn we change to km/1Hours 0,34 km × 3600 s = 1224 km Its so fast wwwooowww

  • WOW that’s so cool WAHHHHHHHHHHHH

  • It's midnight Neighbours: 4:54

  • Do not listen to this scene 5:00 with out headphones

  • RIP headphone users aka me

  • this channel is able to make me learn much more than my school can ever do in my entire life

  • Dude stop, your waking up spongebob, he needs his sleep for work

  • oh yeah

  • This is no horn it's a sound weapon. ^^

  • Nerd

  • make a massage chair powered by sound

  • This is a great physics lesson, after Physics comes History In 1964 John Hilliard, who worked for the parent companies of Altec Lansing published a paper on a horn being used to test metal fatigue on spacecraft and supersonic aircraft. It was 12 feet to a side and the peak output was 180db. It used compressed air and had a frequency range of 25 Hz to 1,000 Hz.

  • 1:46 excuse me sir is that a traffic cone

  • Mark the horn thing has an open end so it spreads the sound and makes the sound as loud as possible as sound will travel everywhere Im only 11 correct me if im wrong

  • its not a fact u broke glass with noice frequency, dislike

  • Rip headphone

  • ‘Building worlds biggest air raid siren’ This would be so cool

  • The gelatin block in 9 months 🤰


  • 4:56 rip To my headphone

  • this litera;;y broke my pcs speaker no cap

  • That's sweet. But you can hear trains from miles away as well but it's more impressive because this is such a low tone compared

  • It can destroy my ears too

  • You can hear train horns 10 miles away.

  • Not noting what he said but it sounds intresting

  • [Cool]

  • is the power output actually preserved by adding the horn? even though it's only a passive component, the air in the horn should be "harder" to vibrate, which would necessitate the sound source producing more power. if there's any analogy to electrical circuits, a higher impedance with the same voltage will obviously result in a larger power output...