The Siren Board

https://www.youtube.com/watch?v=ublWyL2 ... 6718102805
Specs:
Motor HP - 1/6
Port ratio - 5 port single tone
Dimensions - about 9" diameter on front horn, 14" length
Sound output at 100' - To be determined.
Skip to 2:00 for full test.

Looks really nice!

My suggestion is to add a capacitor for a proper windup and a longer and wider horn for higher sound output.

Anyway, how many ports is that? The pitch sounds too high for me tho.

I agree with FahmiRblx, a capacitor would help lots with the wind-down length.

I’d recommend at least 15,000uF. Make sure the voltage is rated higher than what you’re feeding the motor.