Largest ground vibration caused by stereo systems

Largest ground vibration caused by stereo systems
Who
101 Eventos
Where
Brazil (Barretos)
When

The largest ground vibration caused by stereo systems measured 6.985 mm/s at "Insane Sound World Record" organized by 101 Eventos (Brazil) at Parque do Peão in Barretos, São Paulo, Brazil, on 28 September 2014.