Somebody on the high efficiency forum suggested my throat is too SMALL... do you think increasing the throat size a bit will help improve the top end? Its pretty weird the Alpha isn't going higher..., but I always thought a smaller throat is what brings up the top end. I would still appreciate comments on the 6ND410, that driver is really on my mind at the moment... although I really wanna make sure that I've made best use of the Alpha 6 before spending more on another driver.