the hunt for the 12/12 and 1/12 port allerter

[jacob585]

hi guys today i heard something about a 12/12 port aca allerter? has anybody ever found one in the wild?
please post any info you have on this topic. also there such thing as a 1/1 or 1/12 port allerter?

[Someone22]

There is no such thing as a 1 port allertor, that is impossible. There was an option for 12 ports, though none have been found in existence yet.

[sirensandfirealarms]

Would a single port siren even work? I know that dual port sirens existed in Germany but has a one port ever been made?
Also there was never a 12/12 or 1/12 port Allertor, however there was an option to have a 12 port Allertor but none have been found yet

[Snowcube]

Unfortunately, a 12 port Allertor has never been found and was probably never even made. It would be really cool to see an Allertor that sounded like a 2001 or 500A though. Has anyone ever asked a former ACA employee if they were ever sold? I would assume that the 12 port allertor would have used the same rotor as the high tone on the 8/12 port Super banshee though.

[Daniel]

Most pre-war low tone sirens in Germany had three ports, but there may have been some smaller, high-speed sirens with only two ports. A one-port siren would require a ridiculous motor speed to make any meaningful noise.

[Chem_Boffin_6589]

Most pre-war low tone sirens in Germany had three ports, but there may have been some smaller, high-speed sirens with only two ports. A one-port siren would require a ridiculous motor speed to make any meaningful noise.

You thinking of the 2 port Electror S1 perchance? That has a nice high RPM to get some decent sound. Apparently their pitch is meant to be 145Hz.

[Tyler]

As far as I know, the only models were 8 port single tone, and 8/12, 9/12, and 10/12 dual tone. I’ve never heard of a 12 port variant ever existing and if there is documentation, someone feel free to post it.

[Someone22]

I heard somewhere that they had an option for 12 ports. I tried to find the manual for the allertor model but I couldn't find it.

[jacob585]

what about an 11/12 port allerter?

[Brendan W]

None of those exist. With all due respect what is even the point of this post? Allertors came in only 8/12 and 9/12.