Intrigued by this thread. I have been thinking about using a Blackstar HT-112 (Invalid Link Removed) and replacing the speaker. After reading this thread and see what everyone said about the open backs I can't go for that option. I can get the guitar cab cheap hence why I was thinking about upgrading the speaker. The main reason why I wanted to was for the portability. It is incredibly lightweight and easy to carry. Most of the gigs I play have the bass running through the PA and I have a big rig for bigger gigs. Anyways, could I replace the speaker, put a full cover on the back and add new electronics? For a project.