In my other thread about Speakers for the Carr Mercury I have learned that the Celestion Blue is a very popular upgrade with Carr Mercury owners. I can see the possibilities of this 15w speaker in an 8W amp. I love the blackface tone on the clean channel but would like a bit more clarity and definition. Would the Blue kill the Fender tone or enhance it? What is your experience with a celestion Blue in a Blackface fender?