The volume level can be amplified with a CD or tape player or amplified PC speakers. This can be used for resonance experiments including Chladni plates. http://www.youtube.com/watch?v=Qf0t4qIVWF4 | The volume level can be amplified with a CD or tape player or amplified PC speakers. This can be used for resonance experiments including Chladni plates. http://www.youtube.com/watch?v=Qf0t4qIVWF4 |