Holy crap, you're back! Congrats on 666 subscribers lol
Where is this siren located? Im thinking about maybe doing the one by the highway. Thanks
Judging by how most of the dead battery 864-driven 4004s in Mount Pleasant do this, I’d say that this is bad batteries.
Never heard a Whelen growl before.
It's probably bad batteries. Both the analog and digital ESC-864 controls grow when their batteries go too low in voltage. Everything made afterwards just abruptly shuts off when the voltage goes too low.
This is why I never videotape this particular siren because I used to live right by it and their tests are horrible.