The Siren Board

Posted: **Sun Apr 23, 2017 1:58 am**

https://www.youtube.com/watch?v=o9ZFjnAWLFA

https://www.youtube.com/watch?v=d0fvXpUrftc

Posted: **Sun Apr 23, 2017 2:27 am**

It is the Motor Contactor closing Since its a 50HP motor It is a big Contactor.

Posted: **Sun Apr 23, 2017 11:07 am**

it does the same thing in my TMI T-128 recording:

https://www.youtube.com/watch?v=9Ng92R8qP0

Posted: **Mon Apr 24, 2017 3:11 am**

Thanks guys. Wasn't sure it was normal or not.

Posted: **Mon Apr 24, 2017 4:28 am**

Denver sirens seem to do it too.

Posted: **Mon May 08, 2017 6:00 pm**

If you listen closely (sometimes it's not audible in videos or audio recordings), the Federal Signal 2001 does it too. You can sort of hear it in this video. (Unless I copied and pasted the wrong link lol) https://www.youtube.com/watch?v=qgKCBD6x82Y

The Siren Board

"clunk" sound at siren start

"clunk" sound at siren start

Re: "clunk" sound at siren start

Re: "clunk" sound at siren start

Re: "clunk" sound at siren start

Re: "clunk" sound at siren start

Re: "clunk" sound at siren start