PRO_whistle_Dolfin_B

#PRO_whistle_Dolfin_B
¤ Length 58,2 mm, Height 23,7 mm, Width 20,0 mm, 12 g.

PETG , Support on build plate only (support touching buildplate).

¤ Pealess whistle.

⚙️ Technical & Acoustic Details
Description:
Acoustic & Technical Details
This model is a tuned replica based on the physics of a quarter-wave resonator, tailored to closely match the iconic, sharp dual-tone sound of the original Molten Dolfin B whistle.
The whistle features two distinct sound chambers to generate its characteristic piercing chord:
Chamber 1 (21 mm): Theoretically calculates to 4083 Hz. Accounting for an estimated 10% end correction (acoustic air mass behavior at the opening), the real-world operational frequency centers around 3675 Hz (3.68 kHz).
Chamber 2 (20 mm): Theoretically calculates to 4287 Hz. With the 10% end correction applied, the operational frequency centers around 3859 Hz (3.86 kHz).
The combination of these two frequencies produces the exact high-pitched, penetrating beat frequency ne