Great demonstration for resonance. A wine glass is setup in an enclosure. The resonant frequency of the glass is first found by placing a Ping-Pong ball in the glass and adjusting the signal generator to find the frequency that causes the most energetic vibration of the Ping-Pong ball. The glass is then set in front of the horn driver. A loud pulse of sound will cause the glass to break.
Enclosure with Horn Driver Shelf C-1
Signal Generator Shelf C-2
Ping-Pong Ball Dr. 8
Fender P.A. Amplifier Shelf G-3