Finding resonant frequency of my house with worlds most powerful “rotary” subwoofer (Bad Ending👌)

[@pierogiengineering]

Title revision after reading the comments 👍. This one does sound better. Thx y’all

[@Bloodywasher]

hahahahha so good man, bro you gotta raise like 30k+ to repair the structural dmg you just caused to your poor ma's home hahahha bless her heart. I'd be dead. Your sweet moms just like, "not funny". haha "Oh dear, Timmy destroyed the house with his bass thingy again. What ever will I do."

[@wendelreed-jd5ir]

This video is so funny even the house is cracking up 😂😂😂

[@BrooksMoses]

To be fair, that's not structural damage. We get that all the time out here in California from mild earthquakes. It's just that the plaster connections on the wall aren't as flexible as the wooden house structure, so shaking cracks things. A bit of spackling compound and repaint will fix it up just fine.

[@Bloodywasher]

​​@@BrooksMosesbrother I get basic drywall w.e cracking. But this dude tuned into the resonant frequency of his home... lol it's a lot different than a little tremor, especially if it gets to the point where it's cracking the walls. There's damage you can't see or source. It's not shaking from the ground up it's shaking from the inside out.

[@theTeknoViking]

@@Bloodywasher I found _a_ resonant frequency of my very tiny bathroom in a previous flat (I used to sing in the shower). A note that would make the whole room vibrate. Interesting stuff, acoustics! (and I bet the neighbors *loved* it! 😅)

[@Roboat06]

Building the world's most powerful subwoofer seems in-character for a Slavic guy living in Florida

[@genericjonathan4115]

Bro is shaking the house apart, seen that he was doing so, and then continued to do so 🤝

[@jakeknelsen1570]

Whell he was getting closer

[@tonyp9179]

He didn't cause the cracks in the wall or ceiling

[@Reptex_cs]

No man, the sub obviously did not do that. Stop being so gullible

[@spencerking4926]

Walls are just fixed structures coated in shit that cracks if it flexes the slightest so it's not too far fetched

[@SyzygyNoon]

I can believe that the sub did that. If you find the resonant frequency of something, all bets are off.

[@T_ufy]

"We got this subwoofer to cover the higher frequencies" Very unusual combination of words 😂

[@pierogiengineering]

Honestly. Good catch

[@elementsgaming2411]

1:15 "we've got this sub woofer to cover the higher frequencies" is such a flex

[@-.Ascendant]

laughed my ass off at hearing "got the subwoofer over here to cover the higher notes"

[@wiznz3659]

House cracks: Smile Sub dies: Cry I like this guy

[@WilmoTheBear]

Somebody get this like a shipping container or something to mess around in, that house is going to explode and that mama is gonna be mad as hell.

[@bilobolygregsmith270]

"we have a subwoofer for some of the higher frequencies"

[@bunnysidhu5064]

May be we need to to frame this in our homes.

[@lindboknifeandtool]

Tweeters

[@toomuchvrchathewp]

They should put these in theaters. Imagine watching a thing explode and feel every shockwave as if you were in there. Immersion would be at a all time high

[@norkshit]

so would orgasms

[@johnpope8949]

Except the bass from one theater would bleed into the next and it would be one nonsensical rumble fest. Count me in.

[@chrisbarry9345]

Theaters don't even try to get below 20hz. Heck, commercial theaters might only be solid to like 30hz. I had a serious sub system and even IMAX seemed disappointing because of all that

[@thevics123]

Imagine this stuff being used in a haunted house.

[@David-gb2xw]

“My crocks are full of water, the house is cracking up, my subwoofer is bent out of shape… damn”

[@Psoewish]

The part with the crack in the wall was just peak “oh no! … anyway”

[@ladylamellae]

Dude might have just done thousands in damage to his mom's house and the 100 dollar speaker mechanism is what's bothering him I'm dead 💀

[@juleleleldilla3950]

bro’s boutta break the structural integrity of his house 😂

[@ItsRossinator]

Pretty sure he said he was renting, so he might want to edit that part out tbh

[@pierogiengineering]

When tf did I say that

[@ItsRossinator]

@@pierogiengineering I applogize for misinterpreting you, one of your last videos you mentioned "when i get my own house." I assumed you were renting based off that comment.

[@pierogiengineering]

@@ItsRossinator 🤣makes sense. Im not mad bro, was just curious!

[@dj_kovalko]

Florida man turns house into a subwoofer. Somehow in that contexts it does make alot of sense.

[@maleficent3333]

polish man in florida , florida men got nothing on this one

[@thatshinyumbreon2842]

You know it's serious when you hear "We have that subwoofer over there to cover the *higher* frequencies"

[@antoinelablanquie3827]

“At these higher frequencies” 20HZ hahahahaha

[@mofayer]

😅, true bass head.

[@pno]

homie broke his house with bass 😭

[@Imdrekaiser]

I'm pretty sure you're on the brink of truly exploding like those other crazy engineering youtubers.

[@jacobwilbers9852]

Dude is the literal embodiment of floridaman powers being used for entertainment instead of crime.

[@after_glow3912]

Im glad the device broke before the whole house did💀

[@KolMan2000]

Man actually just cracked his roof with the sheer amount of bass he created. Now bring the house down.

[@3xoticG4m3r]

Destroys a section of the wall: 😂😅😁 Destroys a 100 dollar speaker: 😢

[@PlayedbyInstinct]

"anything below there it just uh, it just starts shaking my pants.. ... Now it is laundry day.." 😂

[@defenestrated23]

Brown note: confirmed

[@norkshit]

@@defenestrated23might be a white note 😅

[@baracho4104]

lmao the house cracking into pieces and you go "oh snap"

[@haydenliter3600]

To play higher frequencies, you should be able to lower the amplitude of the wave by changing how much the blades pitch for each period while spinning the fan faster so that the blades catch enough air. This way the energy in the wave is roughly the same for a given range of frequencies and the energy output can be controlled so that you don't end up destroying your house. You could also mess around with the shape of the blade paddles to maximize airflow, but that's a lot of work and precision. I'm glad the algorithm finally found you man, keep it up!

[@broogz]

i believe the problem isnt due to the blades themselves but to the mechanism pitching them that makes too much friction to accurately translate the membrane's movement to the blades

[@TylerHartman]

Slop in the mechanism adds distortion! As for speed, he has enough speed to play up around 25 Hz. I believe his motor is 1550 RPM, that’s actually plenty. However, lack of torque can also translate to distortion do to speed dipping, while the blades catch air.

[@thelonewrangler1008]

Tesla made a device that could supposedly take down enture buildings by matching its resonant frequency. Mythbusters built a similar device that just shook a rod back and forth at the right frequency. I'm willing to bet that you could do some serious damage to your house if you played the frequencies long enough.🤣🤘

[@whyomgwhywtf]

Thank you for destroying you house for science.

[@pierogiengineering]

Any time

[@TheBlakus420]

​@@pierogiengineering😂

[@SDogo]

Ohh.. you did actually found the resonant freq of the house XD

[@Covertghost]

massive upstairs neighbor energy

[@barahng]

Bass so powerful it's actually destroying your house 😂

[@Ashchu117]

the "Oh snap" followed by the cheekiest smile ever, that is a man who is proud of his work 😂😂😂

[@somedude....]

Continues after house starts to come apart. $100 component breaks and gets upset.

[@bruhspenning]

Your thang's gonna appear on seismographs

[@Mar-G_]

sheesh, cracking the code in the wall with this thing hooly

[@runforitman]

love how the subwoofer is for the higher frequencies

[@hullinstruments]

Oh good. all that shaking and vibrating noise coming from mom and dad's room is just a rotary subwoofer.

[@michaelcarrasquillo4781]

Bro sees the infrastructure of his house falling apart because of his subwoofer then cut away immediately and said “alright... 5 hertz… full send.”💀😂

[@SilvaDreams]

Nah, it's just moving a lot of air. Hardly enough to cause those cracks. That is just the building settling and cracking the shitty plaster (seen is tons)

[@Eimrine]

@@SilvaDreams sound waves can go via walls even better than via air. Seems like the video is correctly named and he must just evade using the same frequency in that house again.

[@Volvith]

Oh no it broke. _Only thing left to do is build it twice as large and four times as tough._ Walls will shatter, the house will break, *_but that is a sacrifice i'm willing to make._*

[@Ry-bo9hi]

Bruh weaponized autism and destroyed his house with sound equipment Fascinating

[@pierogiengineering]

Ye

[@hiimmeez]

The fact that the bad ending wasn't the house cracking at 4hz but instead was the sub getting bent was not what I expected

[@JayMatth]

*House starts cracking* "Anyway - lets continue with full volume"

[@driesverhaag8955]

"We got this subwoofer to take care of the higher frequencies" is a wild sentence

[@thebearded4427]

Next episode: "How i found the perfect resonant frequency and my house disolved into tiny pieces". Cant wait to see it!

[@ggmgoodgamingmichael7706]

Just like Tesla said... You are hitting the resonant frequency/vibration of the house

[@existenceisrelative]

I've just had my best bad idea in a long time. Or my worst good idea, i'm not sure. First, you somehow obtain one (or maybe a few) of these rotary subwoofers capable of 19Hz. Second, you design an indoor maze that takes a long while to complete. With mesmerizing patterns painted on the walls, as well as some curtains of tinsel (or similar) and some light curtains for around corners. Ideally, you'd have the ability to conceal small speakers that would emit faint whispering sounds at random intervals. Third, open the world's first jump-scare-free haunted house! No actors, no animatronics, no effects! Just your own brain eating itself every time the curtains twitch!

[@AMA-LLS]

You’re a genius!

[@jimbobur]

Quality Florida house construction 👌

[@soundwaverecords9023]

"i got a sub to cover the higher frequencys" BRUUUUUU

[@amllemans]

😅 this part!

[@frantaspacek]

One of the rare "Bad Ending" videos that actually doesn't end well.

[@Borshyy]

gotta invest in this channel haha, you're gonna go far my friend!

[@Borshyy]

"and its frickin naining man damn" lmfaooooooooo I love this channel

[@eugenenalpin6058]

Ay man, it is what it is 🤷‍♂️ This was FABULOUS while it lasted, stay strong 💪💪 I _believe_ that you'll come back stronger than ever and shake the whole house apart to completion with the damn thing 🤙 More power to you mate

[@pierogiengineering]

🫡

[@PastryBandit4life]

Have you considered finding someone to "donate" a vacant property where you can do a destruction test? Imagine the audience!

[@FellerofTrees]

This.

[@williammussard8751]

I can’t technically second this, but I totally third it

[@tnguyen8633]

Fourth this. We need this bro

[@MonsterJuiced]

This could well be the start of a crazy adventure into insanely over-engineers rotary subs that are installed into theatres that blow peoples feet off

[@kevinfoster2308]

The only way to get the true effect is to listen to this rotary subwoofer video with a rotary subwoofer

[@s.stefan6257]

He is actually such a good content creator. Pls do not lower the quality of production for your videos, even if takes longer to make them. I rlly enjoy your channel and you're a rlly smart guy. Glad i found you!

[@pierogiengineering]

Many thanks, promise to upload good stuff only

[@hughjanus5518]

Use a high speed servo instead of the speaker to attenuate the blades and use lighter material such as Carbon Fiber for the blades. Gained another sub, lets see some more builds.

[@ReaperRamsy]

Finally I can imitate fracking machinery for my neighbors!

[@RC-sk5rg]

This is some Floridian activity for sure. I’m all for it👏

[@PaulLeavitt]

You know it's going down when a YTer says "We got the subwoofer to handle the higher frequencies".

[@ARandomTroll]

you should try a smaller diameter. That should reduce inertia and allow for higher frequencies. Also, if you can get your hands on a 3d printer, try to make the pitching mechanism using compliant mechanisms rather than pin/ axle joints.

[@treywilliams8508]

Everything this man right here said^^^^^

[@TylerL220]

Your last rotary sub video was the first time I'd ever seen one of those subwoofers. I have a new fascination. That's fuckin wild that it cracked the house lmao

[@samohraje2433]

IF you really want to play songs above 20Hz, you actually must to have an each servo motor on the each blade attached. The backforce is so strong, your tiny little subwoofer has not enough power to move them all at once. The good news is, enough powerfull servo is not that expensive, 40-60 bucks for one servo but the construction and other electronics adds up real quick and you'll end up with 2000+ dollars worth of parts for making this subwoofer but the most unbelievable thing is, if you really make it someday, and somehow, keep in mind that if you make your blades large, your house could loose a statics and could fall apart. Literally one 50-60 inch rotor crossection could destroy your house. It will be producing 150dB+ at 10Hz, you can't hear it, but your house especially can. Well constructed servo powered rotary subwoofer with 25inch blades so 50will be entire crossection can outperform multiple infrasubs with 21inch drivers. As i said, if you make it, do not try to match your house resonant frequency, it will 100% fall apart if you let it play long enough and long enough is 10 sec.

[@slavagalkov432]

That sounds scary..

[@Milk_Bag67]

You sound like you're speaking from experience, do you still have a house?

[@The_Geni]

They are going to use this is movie theaters one day

[@wulfski]

Ah yes, Florida. Sunny at 3pm, storming at 3:30pm, sunny again at 3:50pm.

[@isaacgutierrez139]

Your shit is good. I want to let you know that you can ride on your charm and mechanical skills if you ever get burnt out on editing magic.

[@pierogiengineering]

Appreciated!

[@The_Otherguy]

You got me at "We'll use this subwoofer for our higher frequencies" xD

[@Dude8718]

When he says "higher frequencies" in reference to 20Hz tones.... you know shit is about to get crazy lmao

[@vassilyknigge850]

This channel must have the world record for the most amount of subs in like one day.

[@coxfuture]

INSANE FLORIDA MAN SHAKES HIS HOUSE TO PIECES WITH EVIL FAN Sweet project, dude. Strengthen those linkages, and maybe replace the woofer cone with a linear actuator or a solenoid to get into the audible frequency range and you might cause serious structural damage to your house..... Which would be AWESOME I could make some carbon fiber blades for you, the added rigidity would help keep them from flexing under load

[@pierogiengineering]

I appreciate the offer. But I’m kinda low on my budget rn for carbon fiber.

[@sledge3581]

wake up babe new daniel fajkis video

[@reptilez13]

Lighter arms and a faster attenuating motor could do a lot. Super fascinating.

[@dirty2662]

Make it a little bit bigger and put it underground. Boom earfquake machine.

[@GMCLabs]

Man I thought he was gonna be one of those loud obnoxious influencer types. Ended up being a pretty chill dude! Nice!

[@SMateo-hu6ts]

my guy im glad this stuck and that you recreated it because of you now i know this exists too!!!

[@bradenmaher]

Imagine building a huge rotary sub into an old missile silo or like a cave system and finding its resonant frequency

[@norkshit]

oh naaah this sounds like a great way to blow up the earth 🤣

[@bradenmaher]

@@norkshit yeah I hope nobody actually tries that lol

[@Ricardoromero4444]

Bro broke his house with that much base

[@prod.winterxphool6227]

This channel lowkey makes me want to become an engineer instead

[@Calliber50]

You mean I've been a bass mechanic for a quarter century and didn't know this existed? We need to spin this with a 480v three phase motor on a VFD and titanium variable pitch blade assembly from a turbojet engine. Then we're gonna take Miami back from DXJ. v=JgxYvuNvr2I

[@bobjackson7516]

So awesome! I made one of these about ten years ago. I used the motor of a bench grinder to spin it. I used the mechanism from a four rotor RC helicopter to pitch the blades, and used HDPE as the blade material. It worked, but nowhere near as good as this. My rotor diameter was (if memory serves) was 10"? For test tunes, I used 'Bass Mechanik" test songs/tones and a song by Olive called, "Indulge Me". Both probably copywrited, but fun to listen "off" KZbin. I gave up the rotary and went with (4) 15" in Infinite Baffle, and (2) 15" in Open Baffle. All this was documented on the "Hawthorne Audio" forums back in the day, but they're gone, along with the forum. My speakers still play to this day. I can't get to 1Hz, but they're still impressive. Rock on man, love to see more of this. Although, I'm not sure the house can take much more. The feeling of bass like this can't be described. Only "shown off" to your friends.

[@yelyab1]

Did a similar study in a dorm room with a guitar amp. We found the natural frequency and it wasn’t a resonant frequency. You could stand in the exact middle of the room and not hear anything. This wasn’t even an assignment. Curious future engineers at da Tech (Michigan Tech). Keep up the exploration of sound. Lots of work in the acoustics area. Did this over 50 years ago. I can remember that, now help me find my car keys.

[@DJG_Studios]

You know man’s is crazy when he says a subwoofer is covering the higher frequencies

[@scdave_archive]

Holy shit this is nuts and you might have legit created a weapon. Not even joking. There's a whole lot of studies regarding infrasound that gives people unease and breathing difficulties because of the changes in air pressure. The fact you were able to build this relatively easily is hilarious. The VAST majority of speaker and sub manufacturers are prohibited from producing frequencies under 20hz for this reason. Some protips (have a degree in music technology) though as I want to see this project go places - The vast majority of digital music doesn't have any information under 20hz because most speakers cannot play them. Even heavy EDM, its all high passed from around 35hz (ish) in most cases to make the track louder as sub frequencies colour the sound a lot. I'm unsure if this is possible (for reasons that will become apparent), but if you want to have a chance at playing music under 20hz, pick up some classical vinyl records (or anything honestly) made before 1990 as there's a solid chance it'd use an analogue desk for mixing and cutting compared to a digital one. You'll get those frequencies. - You physically cannot hear under 20hz but you for sure can feel it! I'll be honest I would have no idea how to achieve this, but if you were to improve this project, try as much as you can to make it reach at least 60hz. I saw the limitations you had with the set up and the only way I can possibly think of making something vibrate that fast with the appropriate action is some metal crank shaft/piston rotating an oval cam. Kinda like how a vibrator works or a piston driven engine but with the plastic fans on the end? Difficult to convey over text. - if you somehow achieve the above point the damn thing away from your house as you'll end up breaking it more lmao Either way I'm following for further updates. 200/10

[@leonpeter4290]

I. LOVE. IT. Thx for breaking your subwoofer (& the house of your mom) for us 😂🫶

[@egg7300]

Mom: points at cracks in the walls and roof Daniel: smiles

[@johnathonoppel393]

Your going far buddy

[@leotide1990]

On today’s episode of Florida Man: a spider hangs from a web; a fan begins to turn; and, a crack is summoned in the sheetrock.

[@pierogiengineering]

Amen

[@ASaltyAcc]

Bro had the biggest shit eating grin and I’m all for it. Keep doing cool stuff man.

[@bluerxstandard]

This guy was probably an absolute terror as a child. lol I subbed.

[@exi8550]

dont let the insurance adjuster see this one

[@image_cafee]

im glad the algorithm has finally showed your channel. your content is really funny, random (in a good way), and informative

[@teldrah]

Actual mad scientist, destroying buildings with his sound cannon

[@PlumpyNut]

i just found your channel, and it reignited my love for old youtube slavic enginnering, thank you

[@Produkt_R]

Proper house stress test

[@Mizt_Plays]

My man! Keep doing what you do! The detail on this subject between the two rotary subwoofer videos is crazy, more in these two than I could find on all of KZbin combined 🤯

[@sharkieislive]

Bro broke down his house+Rsub for us . 💙🔥

[@aussiedrone1511]

I wish someone showed Dustin because he would 100% want to see this.

[@stuartupton5502]

Destin Sandlin is his name.

[@DM01710]

Loving the follow up video and thank you. This is also reminds me of the story of Nicola Tesla finding the resonant frequency of his apartment building and shaking the entire building like the was an earth quake , local authorities found him sitting in his chair reading a newspaper. 😊

[@uploadsnstuff8902]

That subwoofer is just an earthquake machine. Nice crocs btw.

[@Siphonife]

Some serious Safety Third vibes. I hope your channel blows up. Great chaotic content. Love it.

[@kevinfoster2308]

I think a big improvement would be to put a brace ring around the blades so the blades have two connection points, one at each end. It would rotate with the assembly and be attached with a bearing to the outer end of each blade. It would add to the rotating mass and not the modulating mass so it wouldn't affect response. The added rotating mass could actually work like a flywheel helping it maintain precise RPMs during high output. You could also significantly lighten the blades without compromising strength or rigidity.

[@rauladdam1717]

Sounds like my washer machine when it starts bouncing