My player is 45W x 4 , the speakers has 100w++ , i forgot the exact figure..But then , when i put the volume till 20 ( in the player equalizer - Bass+3 , treable 0 ) the door on both front vibrate very hard , so the sound is not so smooth..Therefore , how to fix this issue ??..In addition , one of the speaker has a cracking sound..what could have cause it but it is not all the time ?? ..thanks

:wavey: