I got the amplifier screwed down which was not as being a big amplifier if there are passengers sitting behind me then I have to push the amplifier to the front side to accommodate their legs. It was tight before and was not moving much but once after all the dune bashing and the battering it gets started to be loose and peep out from under the seat when we are going down the dune. All the rest is securely tied down. Made arrangements to detach the sub woofer and keep it home whenever I do off roading.