Hi 

I have a rare JCM800 bass cab from the 1980's model 1553 serial 1729 and was wondering what the standard speakers where in this model. it's currently fitted with the x2 10" Celestion K10-70 cones and one 15" Celestion Sidewinder S15-250.

where could I buy replacements if one of them failed?

thanks

Neil 

Can the speakers be upgraded on the Code 412 cabinet?  If so, is it something a person can do who’s never changed a speaker before, or would it need professional installation?