I have a old SWR goliath Jr. cab with reconed original speakers. It has not been right since the reconing. The things fart out on most low notes and sounds like paper when I play on the low b string on my six. I was told by a speaker guy that it could be a bad reconing job but he wasn't sure. What I want to know is what is a good naked speaker to load the cab with? I saw some 200w neo 10's on the carvin site that seem like a nice power upgrade and lighter speakers to boot. The speaker guy said I couldn't upgrade because the cab was "tuned" for those particular speakers and that would affect the sound of the cab. Is that true? What speaker is best for working with the SWR 2x10 boxes?