ACA Alertronic AL-6000

[@condb19]

Sounds great! Gotta love them Alertronics

[@amirberisha3659]

I like the way it sounds like a thunderbolt.

[@minnesotaoutdoorwarningsirens]

Nice Alertronic, there was actually a dual tone unit in a nearby city to me, but it was replaced in 2018

[@FSThunderboltfan1000]

I believe I have the board out of that one…

[@minnesotaoutdoorwarningsirens]

@@FSThunderboltfan1000 Nice! It was in Shoreview/Arden Hills MN

[@minnesotaoutdoorwarningsirens]

One of its tones was struggling

[@GunnarWuollet]

Attack or fire?

[@tornadosirenroubik4124]

nice

[@TheCasualSirenEnthusiast]

So why do the analog Alertronics have such a raspy low frequency undertone to them? Is it intentional? Is it part of the penetrating aspect?

[@SluffAdlin]

Not all. The Alertronics 6000s in Sarnia had a lot of high end.

[@TheCasualSirenEnthusiast]

@@SluffAdlin but what causes the low frequency?

[@FSM_Reviews]

That's signal distortion.

[@ianssirenproductions]

Do you know where this is located?

[@wisconsinoutdoorsirens1250]

Wittenberg, WI

[@ToothlessThedragon9]

@@wisconsinoutdoorsirens1250 It used to be in rolling meadows il but now this has been reinstalled and refurbished to wittenburg wi