the speaker for the "gong" is under a panel above your shins(drivers side). there are 4 black plugs situated on the panel. 2 near the floor at the base of the pedals and the other 2 youll find if u look around there. i cant remeber where. the panel will drop down and the gong should be on the right hand side of the panel. it has a plug that might be loose, check it.