Klaxon CS8 Siren Test, High-Low and All Clear

This is the weekly test of a Klaxon CS8 siren, sounding High-Low followed by the All Clear. The siren is located near Ascot, England. More details below.



This siren is part of a network of thirteen sirens used to warn of escape from Broadmoor Hospital, an asylum for the criminally insane (or, to be politically correct, a high-security psychiatric hospital). The most recent escape from Broadmoor was in 1991. The system is tested every Monday at 10:00.


The siren is a CS8, manufactured by Klaxon Signals. It is equipped with solenoid operated Coded Shutters to produce a variety of signals (which is why it is called the CS), and works in a similar way to a horizontal Federal Signal 3T22 without horns. It is activated via telephone line. I do not know what type of controller it uses. I believe that these sirens are heated to prevent icing in winter.


The specifications of the CS8 are below.

Physical
Construction: Cast aluminium
Weight: 122kg
Ports: 10/12

Motor
Voltage: 400V 3 phase
Current: 6A
Motor Power: 3kW
Rating: 15 minutes

Sound
Frequency: 470/560Hz
Tones: 4+
Audibility at 1m: 139dB
Audibility at 30m: 109dB

Siren Description from Klaxon Signals:
"CS8 is a double-ended weatherproof siren for horizontal mounting. Dual frequency signal. For prevention of ice formation, de-icing heaters are an optional extra to be used with a separately mounted weatherproof thermostat. Solenoid operated shutter mechanisms can be fitted (at extra cost) to provide clearly defined and characteristic signals in conjunction with a programmed controller. IP 55 protection."

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I have decided to re-uploaded this video with a watermark due to the high number of deliberate copyright infringements taking place recently. The comments from the original upload can be found here: http://thesirenemporium.proboards.com/index.cgi?action=display&board=sire...

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This video, including its soundtrack and images, is Copyright © FederalSystem7000 2010. Do not use without full permission.

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Category:

Science & Technology

Tags:

• Broadmoor Siren
• Ascot Siren
• Broadmoor Hospital
• Broadmoor Hospital Klaxon CS8
• Klaxon Signals CS8
• Klaxon CS8
• Klaxon CS
• Klaxon CS12
• Klaxon GP8
• Klaxon GP
• Klaxon Signals
• Klaxon Signals CS
• Klaxon Signals CS12
• Klaxon Signals GP8
• Klaxon Signals GP
• Klaxon Siren
• Klaxon Signals Siren
• Siren Test
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• high definition
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[HotTop202]

dude it kinda sounds like our thunderbolt 1000 or 1003t's HI-LO

btw what's the difference between 1000t or 1003t?

[FederalSystem7000]

@HotTop202 The main differences between a 1000T and a 1003 are the solenoid valves that allow the siren to produce a Hi-Lo or Pulse signal - the 1003 is equipped with solenoids and the 1000T is not. As such, the 1003 can produce a Hi-Lo signal and the 1000T cannot. The solenoids can be seen as the 'bowtie' at the base of the horn.

[RediffusionMusic]

does one rotor do the high and one do the low? it sounds like a slowed-down DING DONG! that you hear on tannoy systems+ didnt Federal Signal make Ceiling speakers, I am sure I saw one and it was IDENTICAL to a CES AUDIO QCM-6061

[FederalSystem7000]

@RediffusionMusic Yes, the 10 port rotor produces the low tone and the 12 port rotor produces the high tone; the coding shutters cut off the air flow to one side at a time for the High-Low signal.

I don't know very much about PA systems, but a quick look on the Federal Signal site shows the AMR6 AudioMaster as their current ceiling speaker.

[RainbowUapa]

Playing this video at 10:00 am Italian time, 9:00 am there in England :-)

As ever it sounds scary, but also so sweet and beautiful to me, considering I wanted to move there and I was nearly doing it... I miss Berkshire so much :-(

Please, what siren do you think I would hear from Crowthorne?

Hope to be there again one monday to listen to it! *.*

[FederalSystem7000]

@RainbowUapa I believe that there are three sirens in Crowthorne; one at the station, one at the TRL and one at Broadmoor Hospital itself. The siren at the station is probably the easiest to see, as it is very close to the station car park and only a few metres away from the end of the platform. ^_^

[AlexFoxUK]

Why do I find this immensely cool?

[planeboy737]

I live a few miles away from broadmoor. Although i've not lived here long enough to have experienced an escape, it is certinley chilling every Monday morning to hear this. It's audible for many miles.

[stuntmanmike37]

Wow, I wonder what affect this thing has on the inmates.

[RainbowUapa]

@FederalSystem7000 Thank you so much for the answer and the precious informations!

Going back to England in November, but I'll stay in Brighton... But I could jump at Crowthorne station just for that siren *.*

[opiate115]

Wow. This brings back memories. I used to school at Ascot Heath Infant School. Was very spooky.

[TheOctastar]

10 am on mondays is generally the best time to escape ;)