Hi guys, I have a pair of Monitor Audio B4 Floorstanders, which I've had for about 2 months now, and would imagine that they are now broke/burnt in. Although recently when playing music, ( cd's and vinyls ) and also some dvds, ive been getting a really horrible sound coming from my left hand tweeter. Sounds like a consistant scratching crackling. I know most of you are thinking that i've had the volume up too high and blown the tweeter, but the highest i've ever had the amp on is -30. Surely this level cannot blow the tweeter. Just need some advice on if you guys defo think this is a blown tweeter or possibly a defective tweeter which has only become aparent since the speakers have been run in. I have a Marantz 5400 that the speakers are connected to using QED Silver Ann biwire cable. Any advice as to this is something on my system causing this or its a defective speaker, before I get onto my retailer. Thanks in advance Toadie. PS. If you need more info on my system in order to solve this one please mention it.