Marshall cabinet troubleshooting

[martyfriedman86]

Hi

i recently bough a 1966a marshall used cab
it's a 2x12 slanted cab from 1980 or so.

the thing is it vibrates A LOT with the olume turned up to half
and even at 1/4 when playing low strings.

it's loaded with celestion g12t75
i had someone check the speakers and said it was fine.
can it be the cabinet itself?
i mean, the wood?

thanks a lot!

[martyfriedman86]

anybody?

[brothersnowgone]

Maybe it's been dropped once from a high place or something. You might be able to see if the joints are loose on the inside?

[ScottB]

Check the speaker polarity and make sure they are wired "in phase".