SVP sirens

[loudmouth]

im sorry to
some times i let my opions out but so does every one .

ok i have a question whats that siren that goes above the light bar its usaly black and has a very small outlet. i see them alot on mall security.

[Robert Gift]

im sorry to
some times i let my opions out but so does every one .

Whats that siren that goes above the light bar its usaly black and has a very small outlet. i see them alot on mall security.

What is wrong with that? We wander in the course of discussion.

We should justart another topic and take it from there.

That siren black plastic speaker sounds like Whelen.
I have one. Can be 75 or 100 W depending upon what driver is attached.
(Must be a special thread otherwise it will not screw into the projector.)

It has a very long and gradual exponential flare, with only one bend, not reentrant fold, which I expected to be the best of all speakers.

Buthe very narrow opening causes a strange "aperture" effect and just does not couple sound energy well to the atmosphere. I also think it may "hinge" more sound up and down rather than right and left where you want it.

If it were 3 or 4 inches tall, I bet it would be the best siren speaker ever next to a perfectly round projector <(o)of the same width. Buthat would also make it far too large.
(All statements in all posts by me reflect my personal opinion.)

[q2bman]

Once again Robert. I'm inclined to disagree.

If you have emergency lights on your vehicle and were not using them to warn the public but instead only activated you hazard lights, I would sue for everything you had. Motorists need to be warnd of hazards. Four way flashers are for flat tires not traffic accidents. If you have warning lights use them. Why do you give such advise? Why deactivate anything at an accident scene? Do you see anyone elese turning off lights? How would it look to have an emergency on a hwy with all parties involved sitting with no flashing lights? Responding to the scene lights are to warn the public of an approaching emergency vehicle. While on the scene the lights are to warn of the scene itself.

What would you think if you were driving down the hwy at 75 mph and you observed a flash every second or so of amber? I would think tow truck, construction maybe. I would not think triple fatality accident with several hundred emergency workers on the hwy.

I damn sure wouldn't think that if I saw flashing hazzard lights!

COME ON!

[Robert Gift]

With many lights, some drivers get confused and blinded and run into things.

It doesn't matter if construction or an accident.
Must go. More later.

[q2bman]

People run into cows too.

[JasonC]

Star SS700 siren are by far the best vehicular sirens you can buy. They are derivatives of SVP's, but by far better. Nothing beats it. You have Wail, Yelp, Phaser, Alert, Hi-lo, and air horn tones that are all very commanding. Everything on this siren is great, beats any FS or Whelen siren by far, and beleive me, I've played with MANY electronic sirens over the years. As far as this discussion on hazard lights, my two cents is no type of warning light should be placed in the brake lights or the turn signal lamps. Lol, now that i'm not longer in the fire dept since I moved, all I have is some cones and an orange beacon (the crappy "mail lady" light with an 1157 bulb). Works for me.

[Robert Gift]

Since I have deviated this way off topic, I continued this under another topic:
Emergency Vehicle Sirens, lights, usage, etc.

Still under OTHER WARNING SYSTEMS - Indoor, Outdoor and Vehicular.

Please go there if you wish.
My apologies to everyone.

[Shinkansen]

so, any good recordings/videos of the SVP sirens?

[Robert Gift]

Why a recording of an electronic siren?

Don'they all sound alike?

Well, I did hear one on Dirty Harry which was much slower rise and fall wail.
But other than that, aren'they all very similar?

[q2bman]

so, any good recordings/videos of the SVP sirens?

Here is a SVP siren. Mine is lower pitched but is an older model.


http://www.youtube.com/watch?v=m_HAFRt7Z4I