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Port Stanvac, Australia mystery 8/12 port siren
Posted: Mon Nov 22, 2010 9:25 am
by ver tum
http://www.youtube.com/watch?v=etPrj5KE4IU&fmt=18
Never heard an 8/12 port siren running on 50 HZ before. Sounds like it might have a dual rotor setup, like a Soundmaster. Any ideas on what this thing might be?
It also sounds like there's a high pitched single tone siren in the background, sounding at the same pitch as a Model 5 or STH-10, but in order for it to be sounding at that pitch, I would think that it would have to have 14 ports.
Posted: Mon Nov 22, 2010 2:12 pm
by Allertor113
Sounds like its rotating.
Posted: Mon Nov 22, 2010 5:40 pm
by ver tum
Allertor113 wrote:Sounds like its rotating.
I thought so too at first, but I think it's just the wind blowing the sound more towards the camera. It sounds like he's at least 300 feet from the siren, and the wind can do strange things to the sound, even from that distance.
Posted: Mon Nov 22, 2010 6:45 pm
by guitarguy1985
Posted: Mon Nov 22, 2010 8:51 pm
by ver tum
It could be. That one sounded pretty sickly, but the Australian siren may be a much healthier version of one of those, or one made by the same company. The sickly one sounds like it could be single phase, with bad capacitors.
Posted: Tue Nov 23, 2010 12:18 am
by Justin
Probably something from Grifco, seeing that OH&S legislation would require some form of audible warning for those outdoors.
Posted: Tue Nov 23, 2010 3:17 am
by ver tum
Justin wrote:Probably something from Grifco, seeing that OH&S legislation would require some form of audible warning for those outdoors.
The OP says that the sirens are at the Port Stanvac oil refinery. Do you have any idea what kind of sirens the refinery has?
Posted: Tue Nov 23, 2010 3:51 am
by System 7000
Here is a photo of a Grifco siren. The photo is from the Web Archive's mirror of the Grifco website from 2005, and shows the Model 999. It doesn't specifiy frequencies or ports, but it looks like it could be 8/12.
Regards,
Jerry.