Hi all, this is my 1st post here after a long time lurking in the background, so please go easy on me. I've been interested in amps and electronics for over 20 years and recently decided to pickup a Marshall from a local classifieds that was not working. After researching many things here (tube selection, amp testing methodology, how to clean tolex, failure points for AVT amps, etc...) I got this guy in GREAT physical condition! It had cold solder joints on multiple pot and internal pin connections (speaker pins, transformer pins) and completely broken connections on the input jack. Quick solder job and everything was good as new. Assembled it tonight and was happy to see no flames! Of course, there's an issue though. ** Problem ** No real volume, no bass, super thin sounding. ** Checked ** Headphones sound great LS output connected to another cab sounds awesome (surprised the crap out of me!) Speaker output pulled from the internal speaker and jumped to the other cab ALSO sounds awesome. ** My diagnosis ** Speaker bad? It is the stock Celestion G10-30 AVT. I am a noob at this and have never really known speakers to blow and continue to work? It still plays, just quiet and terrible. LOL. Does anyone have another suggestion for me? Does anyone have a replacement speaker sitting around I could buy? (I'll post this in classifieds as well) Does anyone have a suggestion on a cheap replacement speaker or vendor? Thanks for reading, pic below of the speaker in question.