How Sirens Work

Chris and Vicki explore the basics of both electronic and classic mechanical sirens.

[@seancalhoun1902]

I'm a cop, and I have always loved the sound of the old mechanical sirens, and was never quite sure how they worked, so thanks!

[@willoneil1970]

how long have you been a cop?

[@SunsetfearOFFICIAL]

i hate police

[@HanifAhmadFauzi]

@@SunsetfearOFFICIAL wow, u are so "pUnK"

[@HSETM]

I actually acquired one and will use it for natural disasters.

[@Creeperboy099]

that huge speaker is probably from an eows siren

[@ghousted865]

Creeperboy and friends k

[@ghousted865]

lol

[@billchurchill1723]

Yeah. 412 612 812 1212

[@acap-5030]

EOWS is a toa pa horn

[@demetrijohnsonssirenvideos3590]

Yeah I think it is

[@Epiccatsandkittens]

11:43 lol the bearings are angry

[@theboywhodroveaway7954]

rally funny!!! :D

[@theboywhodroveaway7954]

It's a joke.

[@avialexander]

For mechanical sirens, sound does come out the front. In a mechanical siren like the one you have there, it looks like it's forcing the air out the sides with centripetal(centrifugal?) force, and then shutting off the outlets, creating pressure waves on both sides of those holes, which makes sound come out both the holes, and out the front.

[@max_lax-ne2tv]

This is one of my favourite vids👍👍

[@joesmith389]

I installed small sirens inside the cab of my mustang in the mid 90s called main generators; attached with my alarm system. They were brutal.

[@MatthewRings1]

"We're goin' to grab some BIG volts" "Oooooh!"

[@not_a_therapist]

1:28 is me when my schools new fire alarm goes off.

[@donnah6547]

Loved it, my grandson wanted to watch because he is OBSESSED with Tornado sirens and went crazy after your last one! But I wanted him to see how they work so we have subscribed to your channel because you said you had an actual warning siren that you were going to show us how it work in the near future! And your first siren sounded like a car alarm on steroids! LOL We will be back soon Thank for posting this , made my grandson happy :)

[@awesomeperson6672]

Donna H I love tornado sirens to

[@wolfmaster873]

im obsessed with sirens too my favorite is the whelen wps 4008

[@crazywarriorman]

Can't wait to see the RM-130 siren. Great video, there are some videos of the Chrysler siren on youtube.

[@auggatronicRoblox_official]

That huge speaker he pulled out is called a, "Atlas Speaker". There are two kinds. The dual driver and the single driver. They would usually be found on the, Federal Signal E.O.W.S. series sirens. The E.O.W.S. "SiraTone" controllers would have "amplifiers" which amplify the sound coming out of the speaker. The rotating E.O.W.S. sirens "408,612,816" would have 4,6,8 dual dual driver speakers facing one way. When the siren activates, the speakers would rotate on a big box. The non-rotating E.O.W.S. sirens "1212" would have 12 single driver speakers facing all ways. There are 6 sides with 2 speakers. The E.O.W.S. 1212 prototype (115) has different speakers but acts similar to the normal 1212. All E.O.W.S. sirens have been discontinued.

[@SysKeyJS]

Did anyone else find this when they were like 6 and have just now found it again

[@theotherme1000]

we've got a siren just like that on our team's robot! Out of all the donations to our team, i think that siren was the best one.

[@PJBovio]

If Jessica likes loud, obnoxious noises, she should love the sound of town fire whistles!!! Those things make tornado sirens seem like a trumpet solo for a high school band!! I'm originally from MA, and there was a fire whistle in every town. Our fire whistle went off routinely at noon, 5pm, and at either 9pm or 10pm for curfew. For an ambulance it went off once, for school cancellations it went off twice then twice again, for auxiliary fires it went off five times twice, and for local fires it first blew three times and then blew the box number (for example, Box 57 would be five blows followed by seven more blows) three times in succession. To make matters worse, the damn whistle was an eerie and terrifying sound that made your teeth rattle and your bones turn cold. Worse than anything, this horrid whistle would blow whenever there was a fire, including the wee hours of the morning - and, trust me, it was NOT a sound that you want to be awakened by at 4AM!!

[@Coasterintheyard]

I thought I was the only one with a strange obsession with tornado sirens. ; )

[@aaronwilson9465]

The neighbors must love these guys

[@theboywhodroveaway7954]

Yes I love this guys!!! :D

[@OtamaDragon]

OMG it's one of the speakers of the EOWS 612. I recognized that when I first saw it

[@flamespearmusic9358]

Rachael M me too

[@djijspeakerguy4628]

I recognize those big things. Those big horns look to be from one of federal signal’s “Emergency Outdoor Warning System” (EOWS) 612, 812, or 1212 tornado sirens.

[@simpsonizer]

Great video. I really want a big horn speaker like that! Hard to just come accross at random hehe :) All in all, I am inspired by your experimintations and explanations. I wish I was closer to MI, I would love to volunteer for you! The lady Vicky looks allot like my librarian from when I was in school, lol

[@TheT3d3K]

IS it just me or do they recrated a kind of "Fun with Flags" ? :p

[@flyoversirens3704]

Lol

[@anubhav1234misra]

You bet they did

[@thatnerdoverthere2248]

Fun With Flags

[@dirtracer4life63]

Gotta love the EOWS 612 horn he pulls out

[@darksecond]

that's so cool!

[@SSmithProductions]

I think I just found out why I like sirens. I like them because when they go off, that usually means "SHIT JUST GOT REAL".

[@cobrasvt347]

I took a old ww2 air raid siren down out of a old foundry that was being demolished and rewound the stator for 240 volts instead of 3 phase 480. Its works awesome and is extremely loud with twin choppers. It more or less looks like a huge bench grinder with a chopper on each end. 👍

[@michaelzimmerling8976]

1:26 I laughed way to hard lmao

[@Peachezz131]

6:23 I have that same Gerber Multi Tool! That's awesome!

[@fasthonda]

Kept me entertained for 14 minutes and 15 seconds. How? I have no idea.

[@sirensofdauphincounty4003]

The mechanical siren reminded me of a Q2B siren

[@tikiolly3164]

When the 5 y old at Walmart doesn’t get the Elmo plush 11:15

[@whelenvortex]

That big speaker with the 2 sound devices is used in an EOWS 612 6 speakers 12 drivers

[@PolizeiPaul]

Unlike alot of sirens sold at electronic stores that one seems to actually immitate the emergency vehicles..It's sounds like ones heard in England now days.

[@sunaJH]

Good Shew, enjoyed it

[@graythewolf6096]

The 3t22 air raid siren has solenoids. Meaning it can make 3 sounds and do Hi-Lo. Also EOWS sirens are built to do hi lo. Also it is the Chrysler Air Raid siren. Thats its name. Just that.

[@shelleysymmonds6712]

I love when you say well the herrings are angery

[@mozzmann]

Oh most of the Chrysler Air Raid Sirens were Flat Head 331 Cu In Gasoline Engine, they were essentially an Engine mounted to an over centre clutch that drove the Vane impeller to produce the sound.

[@chuckbear1961]

You remind me of My Jonathan in NY very nice

[@N617A]

The thunderbolt 1000 is unique because of the blower thing that it has. It has 1 port instead of the same amount as the chopper and instead of being quiet at low notes, it's actually loud as hell even at low frequencies. The ACA Hurricane is the same sort of system but the thunderbolt is better due to adjustable pitches, multiple blowers, easier to work on and actually with it's 5M blower, it is louder than the hurricane as a single tone. (Dual tone is about equal or slightly less.)

[@PlatinumEagleStudios]

Also the fact that the t bolt is VERY editable. You can change the top pitch of it, change the rotation speed, even turn off the rotator completely :-D I don't think the hurricane was that changeable. NO mechanical siren was. And if it was a 1003, you can even change the damper timing for the hi lo. The standard timing is a half second on high, and a half second on low. I remember a while back seeing a video on here were a guy had his T bolt set to do 1 second on high and one second on low. So the T bolt is probably the most customisable siren ever :-D

[@N617A]

It's also probably one of the furthest carrying sounds under the chrysler... And the single tone is BEASTLY loud!

[@davidconklin4562]

the siren your talking about at the end is a Chrystler Air Raid Siren, it was used by the DOD and Civil Defense Departments

[@LSDelta92]

YUP! its pwoered by a chrysler FirePower v8, 331ci (5.4l)

[@Kasey1776]

The big horn is from a EOWS 612 siren

[@keanufranz2821]

There is a EOWS speaker, did dey get it from WSS? (West shore servicrs

[@samschannel531]

Where did you get those massive compression drivers? Off an EOWS?

[@darian25804]

what kind/brand was the electronic siren because the only one that i though of was an ATI but i dont think so anymore

[@ConrailGeep]

the big speaker is from a eows 612 or 812

[@HelloKittyFanMan.]

Yeah, mechanical sirens are WAY cooler than electronic ones! In fact, one of mine is that same or very similar model as yours!

[@officergregorystevens5765]

the first one, im only part way in and dont know if you'r showing more than one siren.. but it looks and sounds like the kind that go off in houses with security systems.. they were at least installed usually in the basements of homes with security systems in the 90s.. large to huge homes, anyway.

[@MoffittArts]

I

[@lorinhatch9917]

That big horn is from an Eows 612 siren.

[@Vyclops]

the big horn is for an EOWS 612

[@KD7CAO]

Chrysler Victory Siren available in both Gas and Natural Gas.

[@shayganhallaj4358]

Now I know from where Sheldon's ( Big Bang Theory ) Flag series has origionated from

[@flyoversirens3704]

What is the model number on that large speaker from the air raid siren?

[@amberlynn6914]

@crazywarriorman It is A federal 2T22B

[@WatchKek]

I know u remembered it, but it's the Chrysler Air Raid siren. It has a maximum output of 138 decibels and can be heard over 2 miles away.

[@FoodOnCrack]

Its their way of saying: I'm free.

[@HelloKittyFanMan.]

Hey, how can you power that AC motor with a DC source? What determines if a brush motor is universal? I know there are plenty of DC brush motors, but wouldn't they just vibrate if you ran them on AC?

[@EASsirenVids01]

He pulled a speaker from a EOWS 612 Tornado Siren.

[@nancylucas7815]

the big speaker is a EOWS speaker horn.

[@HanifAhmadFauzi]

Amazing uwowowo

[@mycatbutterball]

I'm so into sirens I have a cup and a paper towel roll on my I pod to make it look like a tornado siren

[@Random_4400]

If you have English subtitles on on the air raid siren part it says: ah ah ah

[@hulksmashnoobsgotit2387]

your neighbors probably love you

[@null90000]

That big horn is from a EOWS 612

[@Imf44]

1:28 MRRRRRRRR

[@Intrafacial86]

The mechanical siren is a rather simple concept. The frequency of the sound it puts out is equal to the number of rotations per second times the number of holes around the side. A siren with 11 holes that rotates at 40rps will produce a sound of 440Hz, which is standard concert A.

[@thesportbikeman]

chrysler hemi there is one out in oakland and it is gas power and it was accually a devision of chrysler marine and they are still a few active examples of the victory air raid siren

[@RealityMilitaryTV]

Thank you all for this educational entertainment! :)

[@jpsgarage]

Are those speaker cones/drivers from an EOWS-612?

[@mimi2]

John Paul Kalilec yes

[@Grey-sf4zo]

Haha Yea they look like it

[@friedmanirit]

That is exactly what I was gonna ask. Until I realized you wrote it.

[@nathantrigg5399]

Nick Silcox Nar she's looking at him with love in her eyes, look, and because his carrying.

[@theodoretherabbit4999]

:]

[@siouxsettewerks]

@RubertaLang third sequel: To get back to that, does Photon explains for example why that the reflective metal coating of a cd is blasted off under High Voltage discharges? NO, he has fun showing it, but things like, "hey it expands quickly, as it heats way faster thant the plastic support, so it delaminates explosively as the constraints beween the plastic and conductive layer grow superior to the bond of the two layers" No way, so hell, it's my guess, for all I know, and Photon

[@demetrijohnsonssirenvideos3590]

11:16 the captions say ah from the sirens noise

[@worldofbrandan]

He forgot to mention that the Chrysler Bell is the loudest air raid siren made.

[@whitechannel2669]

Your pocket size power supply ❤

[@marymharmjfelicitas1906]

the big speaker is a SiraTone spaker for E.O.W.S

[@theericfreeze4498]

Dang! Ware did you get a horn from a EOWS siren?

[@graythewolf6096]

Nice its a EOWS Siren speaker. I can tell because of the dual speakers on the horn. It would be cool to make up a EOWS 612. 6= The horns 12= Total speakers in siren. It will be 6 times as loud. lol

[@siouxsettewerks]

@RubertaLang second sequel: As to why most of the video are starring Chris Boden, maybe that's because he is one of the few people of that thing that is doing it fulltime? Quite frankly, Paul Kidwell gets to be the explaining one, or on the cnc equipment, Rick, etc, but they are not there full time, Chris is. Do you watch the vlog that is the behind the scenes of this? In it, Moose, and other people of the staff explain what they do...

[@HelloKittyFanMan.]

Um, actually, a lot of the sound *does* also come out of the front of the siren. Air gets sucked in that way, but at the same time, sound is emanating out of there! In fact, with some models, I've noticed that it seems like more sound comes from the suction horn than from the blow ports.

[@AKSoapy29]

Where do you get those big electronic sirens? It would be AWESOME to have one!! :D

[@HelloKittyFanMan.]

I've heard of another gasoline siren! There's a fuel version of the ACA Allertor! That's weird too! Can you try to find one of those and demo it, too?

[@Josh-le6lu]

8:19 Holy shit! I have one of those in my basement that i got when i was a little kid.

[@mimi2]

Matthew Hawthorne still have it?

[@NewfDraggie]

@insAneTunA Most of their videos don't end up on youtube, go to their website to see follow up videos and etc.

[@form109]

Chrystler made the Victory Siren....they did use a Hemi Motor.

[@AmericanLocomotive1]

That siren you are talking about was powered by a propane fueled Hemi V8

[@le0ismyp00kie]

People wearing headphones or earbuds: 👁👄👁

[@Droideka133]

They're called Big Bertha and Big Red.

[@danz409]

that is an epic power supply... i want one

[@MoffittArts]

I dare you to stand next to a Thunderbolt siren while its going off, Its wild o_O

[@MAS68saxophone]

i did take one apart, but my camera cut short

[@bdawg7132]

please make this video again but on your own... as in without Vicki

[@tyttuut]

Use one/multiple weapons to attack them from this array: Steak Knife .22 Magnum revolver Large Blunt Object

[@kdc43]

You ain't kidding.

[@filename099]

8:24 sounds like a cut black ops sequel XD

[@Snowcube]

Is the big horn from an EOWS siren?

[@marymharmjfelicitas1906]

alertec2202 yes it is

[@Logic44]

at first i thought it was just called federal signal EOWS (insert model here), but its actually federal signal siratone EOWS* (insert model here)

[@GOVT-fy5pi]

As soon as he pulled it out i thought "Yup that's an Eows"

[@RaykoDrg]

Does he needs a gun for a video presentation? By the way, that power source is big. Nice vid, I always wanted to know how mechanical sirens works. Thanks.

[@saviourgovan2559]

can I have your small siren plz I want to hook it up to my amp see how louds it is

[@wolfmaster873]

is that a horn from a eows612

[@MuggyB]

nice

[@christianthompson2199]

The air raid siren with the gas motor is a Chrysler air raid siren

[@Elizabeth-ts4om]

There's also the B&N Mobil Directo and the RARE Thunderbolt 2000

[@Elizabeth-ts4om]

The mechanical siren had a 6 port chopper I believe

[@marlonvasquez6531]

Used for the EOWS

[@bruinhaleymusic]

I believe those speakers came from an EOWS siren.