Low frequency rumble: Listen & Download Low frequency rumble .mp3 Error! Change your browser, please! ⇓ Download Electronic energy, shutdown,, start up ⚠ Low frequency rumble ⚠ Button click ⚠ Electric discharges, Jacob’s ladder ⚠ Switch ⚠ Multichannel switch ⚠ Turn on, turn off the appliance, ⚠ Toggle switch, Small switch ⚠ Wall switch ⚠ Low frequency electric drone, movement ⚠ Electrical discharge surge ⚠ Small electric motor ⚠ ★★★★★