Ok I was just practising the other day and I have this one effect that is really unique and cool but realy loud. I left it ringing on my open C# (A string) and I noticed that the speakers were FLAPING. I mean like hang a T-shirt on of a moving car durring a hurricane. I don't like this. I lowerd the volume levels on my BP200 and it's much better, but should I be worried? And what would happen if I kept this up?