Federal Signal 2001-SRN | Full Alert | Deerfield Township, Michigan

[@Tqbrock]

Roundbacks look weird, but they do look good!

[@joelrobinsonwxsrn]

Solid video, James!

[@WarningSirensOfCNY]

I like your pfp, I just got to see one of those on the ground recently

[@purpleviolet2058]

A really amazing video!

[@SirensVacuums]

Not gonna lie. These 2001s look beautiful with CD Yellow.

[@kansasclocksandsirens]

crisp

[@TheBoysTopSecretisOrganization]

Who heard the 8 port undertone?

[@joelrobinsonwxsrn]

I think the undertone might be the hum of the motor in the background.

[@MichanaAlerting]

These sirens do have an undertone, and it's 4-port. They use the same rotor as the model 5 so look at a video of a model 5 with no shroud to see what I mean

[@EastDetroitMusic-Sirens3000A]

@@MichanaAlerting It's the sound of all of the air being sucked through the intake.

[@WVSP1]

​@@MichanaAlertingI thought it was a model 3 chopper

[@MichanaAlerting]

@@WVSP1 that might be right, I'm just going based off of what I remember