Thanks guys !I guess i will have to open it..It has no backplate,Hunter.About the mag on the floor,i couldn't tell :),it's an old pic already..Thanks for the code,Will!Btw,i don't know if Marshall had different cabs/speakers for their Bass amps and their guitar amps,but this one looks really huge.Much bigger than the regular guitar cabs from the 80's and 90's anyway.Could it be a bass cab?