Yup! ACA figured out that they could just combine the intake and horn into one instead of having the two separate horns. Cheaper to build and maintain, and also much lighter.

Title says it all. I recorded Port Lambton's CLM Mailbox siren inside the horn enclosure! It went off unexpectedly which is why I missed the windup.

https://www.youtube.com/watch?v=Ce_X0aDZH3E

I recorded it! Missed the windup, though.
https://www.youtube.com/watch?v=Ce_X0aDZH3E

That is almost certainly a CLM. I plan on recording it today.

I only saw the one Model 2 I linked the streetview to, where are the others?

Then I have absolutely no clue where those are coming from. It sure sounded like one, though. What could the two other sirens be then?

It's at 1182 Plank Road, N7T 7H3. It's at a Plains Midstream Canada refinery.

https://www.instantstreetview.com/@42.9 ... .48p,2.53z <- Siren can be seen in streetview if you zoom in

https://www.youtube.com/watch?v=FRHJzUdx-3U The 2T can be heard at 1:03 in the video.

Sorry to bump an old post, but I've found two new sirens: An active Model 2T located in Sarnia, at a chemical plant down the street from one of the Modulator 3012s at the railyards, and a Modulator 3012 located at a plant near Sombra, Ontario. I accidentally recorded the 2T while recording a Modulat...

This is great to hear! I'll have to head over to that area one of these days when I'm off work. I'll see if I can find any sirens for you. I hope they are not more ATI-HPSS32s like Sarnia's.

Awesome! I'll have to see about getting out to Brigden one of these days and getting a recording. I'm also planning on recording one of the Suncor 1003 sirens tomorrow.