The Siren Board

Ah, so that's what the bottom disk is for... always wondered.
Anyways, I'm not taking to the i-Force series immediately... Modulators look better. i-Forces just don't look like sirens to me. Maybe cell phone towers?

Hi!

I think Robert is right. Here you can see a picture of the well-known Federal Signal which looks similar to he I-Force:

not to be to pickky but just so i have this in my head right. I would guess the sound waves would basicly bounce off the bottom cone and top cone as they exit the siren. hence the resion why mods and i would guess i force have a dumby cone on the bottom.

Still think nothing will beat the saw wave of a elecomecanlical siren.

loudmouth wrote:not to be to pickky but just so i have this in my head right. I would guess the sound waves would basicly bounce off the bottom cone and top cone as they exit the siren. hence the resion why mods and i would guess i force have a dumby cone on the bottom.

Still think nothing will beat the saw wave of a elecomecanlical siren.

wait...

loudmouth wrote:[Not] to be to [picky] but just so I have this in my head right[:] I would guess the sound waves would [basically] bounce off the bottom cone and top cone as they exit the siren. [Hence] the [reason] why mods and I would guess i force have a [dummy] cone on the bottom.

Still think nothing will beat the saw wave of [an] [electromechanical] siren.

(It's people like this that make me worry about my generation )

Anyways, you are correct. However, most electronic sirens actually do use a saw wave (I think) but from a distance, like mechanical sirens, the sound sounds more electronic-police-siren-wail than mechanical.

Thanks Klaus.
That is just what I envisioned!
(I also envisioned a curved pathway from driver to center (drivers facing clockwise) to allow a much longer more gradual flared tube until it opened down into the disk exponential flare.

I do not understand that sharp offset from the disk opening to the exponential flare pathway (near the center connected piece.)
Looks like a sharp "step".
I would expect it to be perfectly smooth and rounded.

Electronic sirens produce a squarewave to accelerate the diaphragm from one extreme to the other. This produces the loudest sound without wasting energy controlling the diaphragm if it were a sine wave or other kind of waveform.
For voice (P.A.) the effective wattage is less because it must move the diaphragm more accurately and subtlely to produce intelligibility.

what a good idea!