Quote Originally Posted by DrNomis_44 View Post
That's actually how Jim Marshall (who started the Marshall company in the early 60's) designed the first Marshall Quad Boxes, fully sealed....

....On the other hand, you have amplifiers manufactured by Fender that have speakers mounted in cabinets with open backs, this produces a very different kind of sound compared to the Marshall sound.
Well I guess that "seals" it. Thanks for the mini history and science lesson Dr N. I also like the idea of not having to cut up the back of those beauties.