The file 'V29 With Amplifier 3D Printer Model' is (stl) file type, size is 2.3MB.
What happens if you place a horn on an already loud whistle.
Lower frequency (Hz) but higher sound (dB).
Horn theory: https://en.wikipedia.org/wiki/Horn_loudspeaker
V29_but_louder.stl | 4.7MB |