hi, i need some advice from all of u guys out there...i installed an amp in my car`s boot....it is a wira aeroback..when i open the boot, it is ok...but when i close it, there will be rattling sound coming out...the accessory guy say taht, its normal due to the lock of the boot which vibrates when the sub pumps....quite irritating coz feel like the back of my car got lots of noises when pumping the sub....any of u guys hav the same experience??