Which do you prefer?

[Archon]

I want to hear what a 5/6 would sound like in a Model 2

[Robert Gift]

A fascinationg effect about dual tone sirens is that when they reach their peak steady pitch, to me the two tones blend so well they become inaudible as two distinct tones.

In the Thunderbolt, and SD-10, I hear the sour gravely resultant and not the two tones producing it.

But when those tones rise and fall, I can discern the two tones.

[Gil]

I was never able to hear the dual=toned in sirens. I dont know why, i just cant hear it.

However, ive figured out that dual-toned sirens often "switch tones" in opperation. where you can hear one, then the other.

[Robert Gift]

The most fascinating siren sound I ever heard (here) was a 2t22 in Hi-Lo as the pitch rose.
It was haunting!
As I lock on to one pitch, as it raises, the pitch then drops down to the other pitch which is also rising. Difficult for my mind to grasp.

The nature of dual-toned sirens is that their tones blend so well it is difficult to differentiate them.
Had I not heard the tones rise or fall but only heard them at their steady peak, I would not have recognized that they were dual-tone.

A poor analogy is that when you see YELLOW on this screen, you are actually seeing RED and GREEN blending to produce YELLOW.
No YELLOW phosphor exists on the screen.

The pipe organ has stops which have pitches which blend together so well that you don't perceive them as separate tones.

[fstbolt]

5/6 because the tone produced is a lot more attention getting.

[500AT]

5/6 all the way!

[Robert Gift]

I would prefer the 4/5, because not only does a lower pitch sound penetrate better, it also sounds better. I don't really care for high pitched sirens.

If the 5/6 sounds a D and F (minor third), at the same rotor speed the 4/5 would sound B-flat and D (major third) a major third lower than the 5/6.
Anyone know the 7(?) adjustable chopper speeds? Or is it 5?
I would prefer the 5/6 at a lower chopper speed.

[SirenMadness]

I prefer the five-to-four port-ratio on a Thunderbolt, because it sounds simply monstrous, like a Hurricane.