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.
Actually some sound does come out of the intake, not much, but a little bit. Its the reason why the 3rd gen ACA Allertor 125 had a larger intake cone then previous generations. Its to preject thevsound more efficiently.
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.
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 :)
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. 👍
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.
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!!
Except the loudest whistle only gets 125 decibels measured from 100 feet away. And the chrysler siren they speak of in the video can reach 138 decibels from 100 feets away
Actually the lionKing defender siren made in china is now the largest, but doesn't hold the record for loudest siren because it makes the same decible rating as the chyrlser siren. Since the chrysler siren came first, it still holds the record.
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.
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.
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.
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.)
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
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.
Wow. Even after the explanation of how the mechanical siren "pumps air", Vicki could not figure out on her own that the mechanical siren would make almost no sound if the front is blocked. Why is Vicki there?
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.
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
@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
@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...
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
Oh BTW if you remove the three screws holding the outer cone to the voice coil you will see the first diverging cone. you removed the voice coil to magnet screws.
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
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.
Yeah, I've really always thought that running a siren on a fuel-powered machine is really weird and interesting! First off, there's this starter motor that runs before the siren can make its signal! That's way weird! Secondly, how do you keep getting fuel to it in the midst of an air raid? The engine on the Chrysler Air Raid Siren isn't "like a gasoline engine;" it IS a gasoline engine! What's this "like" business?
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.
![Sirens doing weird or unusual things compilation [TAKE 2]](http://i.ytimg.com/vi/vCPhdw_8AR8/mqdefault.jpg)
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!
how long have you been a cop?
i hate police
@@SunsetfearOFFICIAL wow, u are so "pUnK"
I actually acquired one and will use it for natural disasters.
that huge speaker is probably from an eows siren
Creeperboy and friends k
lol
Yeah. 412 612 812 1212
EOWS is a toa pa horn
Yeah I think it is
11:43 lol the bearings are angry
rally funny!!! :D
It's a joke.
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.
Actually some sound does come out of the intake, not much, but a little bit. Its the reason why the 3rd gen ACA Allertor 125 had a larger intake cone then previous generations. Its to preject thevsound more efficiently.
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.
"We're goin' to grab some BIG volts" "Oooooh!"
Chrysler Victory Siren available in both Gas and Natural Gas.
1:28 is me when my schools new fire alarm goes off.
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 :)
Donna H I love tornado sirens to
im obsessed with sirens too my favorite is the whelen wps 4008
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.
IS it just me or do they recrated a kind of "Fun with Flags" ? :p
Lol
You bet they did
Fun
With
Flags
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. 👍
I thought I was the only one with a strange obsession with tornado sirens. ; )
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.
the siren your talking about at the end is a Chrystler Air Raid Siren, it was used by the DOD and Civil Defense Departments
YUP! its pwoered by a chrysler FirePower v8, 331ci (5.4l)
OMG it's one of the speakers of the EOWS 612. I recognized that when I first saw it
Rachael M me too
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!!
Except the loudest whistle only gets 125 decibels measured from 100 feet away. And the chrysler siren they speak of in the video can reach 138 decibels from 100 feets away
Can't wait to see the RM-130 siren. Great video, there are some videos of the Chrysler siren on youtube.
The neighbors must love these guys
Yes I love this guys!!! :D
Actually the lionKing defender siren made in china is now the largest, but doesn't hold the record for loudest siren because it makes the same decible rating as the chyrlser siren. Since the chrysler siren came first, it still holds the record.
That big speaker with the 2 sound devices is used in an EOWS 612 6 speakers 12 drivers
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.
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.
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.
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.
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.
Yeah, mechanical sirens are WAY cooler than electronic ones! In fact, one of mine is that same or very similar model as yours!
please make this video again but on your own... as in without Vicki
Kept me entertained for 14 minutes and 15 seconds. How? I have no idea.
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.)
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
It's also probably one of the furthest carrying sounds under the chrysler... And the single tone is BEASTLY loud!
This is one of my favourite vids👍👍
1:26 I laughed way to hard lmao
The mechanical siren reminded me of a Q2B siren
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.
The big horn is from a EOWS 612 siren
When the 5 y old at Walmart doesn’t get the Elmo plush 11:15
Did anyone else find this when they were like 6 and have just now found it again
That big horn is from an Eows 612 siren.
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".
Now I know from where Sheldon's ( Big Bang Theory ) Flag series has origionated from
Gotta love the EOWS 612 horn he pulls out
Wow. Even after the explanation of how the mechanical siren "pumps air", Vicki could not figure out on her own that the mechanical siren would make almost no sound if the front is blocked. Why is Vicki there?
I love when you say well the herrings are angery
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.
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
He forgot to mention that the Chrysler Bell is the loudest air raid siren made.
@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
the big horn is for an EOWS 612
2:23 I laughed when he throw it😂😂
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
He pulled a speaker from a EOWS 612 Tornado Siren.
the big speaker is a EOWS speaker horn.
Here is a science question for you, if the tornado siren sucks in helium does it make a different sound?
the big speaker is from a eows 612 or 812
If you have English subtitles on on the air raid siren part it says: ah ah ah
Where did you get those massive compression drivers? Off an EOWS?
Your pocket size power supply ❤
@insAneTunA Most of their videos don't end up on youtube, go to their website to see follow up videos and etc.
That siren you are talking about was powered by a propane fueled Hemi V8
@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...
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
Oh BTW if you remove the three screws holding the outer cone to the voice coil you will see the first diverging cone. you removed the voice coil to magnet screws.
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
the big speaker is a SiraTone spaker for E.O.W.S
Chrystler made the Victory Siren....they did use a Hemi Motor.
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.
The air raid siren with the gas motor is a Chrysler air raid siren
There's also the B&N Mobil Directo and the RARE Thunderbolt 2000
Use one/multiple weapons to attack them from this array:
Steak Knife
.22 Magnum revolver
Large Blunt Object
8:19 Holy shit! I have one of those in my basement that i got when i was a little kid.
Matthew Hawthorne still have it?
Its their way of saying: I'm free.
The mechanical siren had a 6 port chopper I believe
I dare you to stand next to a Thunderbolt siren while its going off, Its wild o_O
6:23 I have that same Gerber Multi Tool! That's awesome!
5:48 when you bought an eows 612 and didn't have enough money left for a trumpet
Woah this guy is physics duck right ??
I love choppers. They sounds so cool while shutting down.
11:16 the captions say ah from the sirens noise
that is an epic power supply... i want one
You remind me of My Jonathan in NY very nice
8:24 sounds like a cut black ops sequel XD
With the big siren it’s from a tornado siren
I believe those speakers came from an EOWS siren.
your neighbors probably love you
And oh yeah, I did get mine on ebaY, too, but it didn't cost me $50. I can't remember how much, but I know it wasn't that much.
you took that signal generator from the set of back to the future didnt you?
Yeah, I've really always thought that running a siren on a fuel-powered machine is really weird and interesting! First off, there's this starter motor that runs before the siren can make its signal! That's way weird! Secondly, how do you keep getting fuel to it in the midst of an air raid?
The engine on the Chrysler Air Raid Siren isn't "like a gasoline engine;" it IS a gasoline engine! What's this "like" business?
They're called Big Bertha and Big Red.
Dang! Ware did you get a horn from a EOWS siren?
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.
@crazywarriorman It is A federal 2T22B
Is the big horn from an EOWS siren?
alertec2202 yes it is
at first i thought it was just called federal signal EOWS (insert model here), but its actually federal signal siratone EOWS* (insert model here)
As soon as he pulled it out i thought "Yup that's an Eows"
Thank you all for this educational entertainment! :)
sooo when was this video actually made
it just looks and sounds old
At 11:47 she tried to do pulsed steady on a single toned siren
you didn't need to throw the paper towel at the camera. you already threw the siren housing at the camera
People wearing headphones or earbuds:
👁👄👁
4:24 to 4:54 that’s so cool!
1:28 MRRRRRRRR
Are those speaker cones/drivers from an EOWS-612?
John Paul Kalilec yes
Haha Yea they look like it
That is exactly what I was gonna ask.
Until I realized you wrote it.
Nick Silcox Nar she's looking at him with love in her eyes, look, and because his carrying.
:]
Good Shew, enjoyed it