Wow! Those two Thunderbolts sound almost identical! They are both low pitched, and they both have slow wind-downs. Isn't it rare to have two slow wind-down TBolts so close to each other?
Great video!
Josh
Owner of a Federal Signal Model D Audio YouTube
Awesome!! absolutely
i would have to say this is one of the coolest videos in a while to hear 2 bolts on Hi-Lo sounding and not a test, But a really working fire.
makes Me want to respond to the fire lol