sentry siren video, Valley TX

[scooterbugs25]

http://www.kcentv.com/news/c-article.ph ... &nid=12667

[Nelso90]

That's a DC siren, listen to the starting torque, it sounds like a Sentry Defender.

[SirenMadness]

That was one awesome video! Thanks allot. Sentry really rocks.

[Trey]

That was one awesome video! Thanks allot. Sentry really rocks.

Damn straight.

I was really impressed with our 10V today.

[kswx29]

That was one awesome video! Thanks allot. Sentry really rocks.

Damn straight.

I was really impressed with our 10V today.

Was today the test, did you record it?

[Archon]

That siren is a Sentry 16V1T-B 8 port both ends 2 motors one one each rotor you can notice how the are just slightly out of phase with each other. and it has Skirts instead of Horns

[StonedChipmunk]

Eep, I don't like the looks of that siren. Freaks me out for some reason. Don't horns add more dB? Or are they trying to lower it?

[Travis]

The skirts push the sound down and out...for more localized coverage.

[500AT]

I really like the 20V2T siren that Sentry manufactures. If I had to buy a new siren, this would be my first choice. Followed by their DC models. I really find their overall frequency range much more effective than the Federal 2001.

[Robert Gift]

I really like the 20V2T siren ... I really find their overall frequency range much more effective than the Federal 2001.

What is their frequency?
Why would it be more effective?
If you wish, I'll include the port counts to my ports/pitches post.
Thank you,