Welcome One And All. A Little Bit Of My Know How For You Guys (^_^)

Okay. Hi. My name is Jordan Gosselin, and I have a HUGE interest in Fire alarms and Out Door Warning Sirens. Many of the great fire alarm Companys are Simplex Grinnell, Honeywell, witch owns  the company Notifier. They make the BG-12 and the BG-12LX pull stations. Here is a picture of the BG-12 pull station

Notifier BG-12 Pull Station.

There are many siren company's as well. Some better then others. One that I want to Talk About is ACA or ASC. Those are acronyms for Alerting Communications Of America and American Signal Corporation  Back in the early 1980's the company was named Alerting Communications of America. But a while ago, the President sold the company to a new guy who then renamed it to American Signal Corporation. It's is still known as that to this day. They once made the worlds loudest Siren that was currently manufactured. It was the P-50. It looked like this

Old add picture of the P-50.

A yellow painted P-50 that was part of the old siren system in The Colony, Texas.

ACA Also made other models like the P-50. The little brother to the P-50 was the P-15 and the RM-130. Pictures of them are here.

A yellow painted ACA P-15.

A standard grey painted ACA RM-130.

Both the RM-130 and the P-15 sirens had motor gear driven rotors,  meaning that when the chopper motor starts up, there is a speed reduction gear in the hosing in the back of the horn, witch reduces the speed of the chopper motor to 3 or 2 RPM. This was used for the rotation of the horn, the speed reduction does not affect the speed of the chopper motor, or the sound of the siren.

ACA Also made electronic sirens. This included the Allertronic 6000-R rotating electronic siren.
Some omni directional models were made. Such as this extremely rare Allertronic model, pictured here.

This was an old vintage siren that was installed in the Oakridge National Security Complex in Oakridge TN. This was a very rare ACA model that sadly has been taken down and replaced with new sirens. A video of it sounding is below.

It had a wind up, but no wind down. But the new sirens that came out long after this model had no wind up's, just wind down's. The wind up's were there, except for they were very quiet. The ACA Allertronic 6000-R looked like this.


Like it said in the old P-50 add, the siren was 135 Decibels at 100 feet away. No other siren at that time produced that sound pressure form that far. But in between 1952 and 1957, there was a siren that produced more. It was made my Chrysler and used a Chrysler V8 Hemmi Engine. It was either diesel or gas, I can't remember, and it was rated at 138 Decibels at 100 feet. It could be heard from 4 miles away. They built these during the Cold War Era to warn of incoming enemy attacks. One of them is pictured here

A yellow Chrysler Air Raid Siren.

If you can see it in the picture, you can see a round thing on the bottom of the siren. It was a turntable that allowed the siren to rotate a full 360 degrees. Back in the 1940's Bell Telephone made the Bell Siren. It was a bit quieter then the Chrysler, but it turned into the Chrysler in the 50's. Here's a picture of it.

Chrysler Bell Siren

Here are some more pics like this:

Taken at the Chrysler Factory.

Just sitting there.......

Men in suits activating one of these beasts.

More men in suits activating another one of these beasts.

Another Siren Company is Federal Signal. They made the EOWS Series of sirens. They are all pictured and labeled here:

The EOWS Model 408

The EWOS 612

The EOWS 812

The EOWS 115

The EOWS 1212

The Acronym EOWS stands for Electronic Outdoor Warning siren. The Model 115 was the rectangular horn version of the 1212. And was the only rectangular horned model in the series.

The series is now discontinued