I have two sets of identical earphones. One I use for my ride to work on the trolley, the other I use in my laptop bag.. along with my laptop bag I also have a tv tuner with an external antenna which at the base has a huge magnet to attach to any metal surface.  Well, one day I changed out the earphones and when I listened to it, it sounded weak and almost constipated.  No full bass, just flattened out sound.  I really think the magnet got too close to it.  Does anyone know if this is the reason? or how I can fix it?  I've gone through two earphones of the same model and at first I thought I got a lemon, but now I think it's the strong magnet.