I need to replace a blown tweeter for a Euphonic Audio VL210 cab. I was told this was a Foster O25N47. I am having trouble finding this tweeter that I was told was "common" type, and should be easy to find. I am getting frustrated and just about to say screw it and leave it alone. Who cares about tweeters anyway? Not the folks at EA , who apparenrly have ZERO!!!!!