Hey I got this second hand bass amp it's a Marshall mb4210 and it has this buzz / rattal sound that happens when I play loudly on a low fret. The buzzing stops when I tilt the amp backwards or forwards if the amp is not to loud. I know it's not the bass or the lead. Is this a speaker problem or is does something need to be tightened
Do not overtighten but yes, check that all out first of all. I suspect a loose speaker screw somehow causing you to lose a good seal with the cab that fixes itself when you tilt it back.
Thanks for the help guys , I was told by a guy at the shop it was the speaker that caused this and I wasn't best pleased. Just checked the speakers two screws was loose on the right. Completely sorted now. Cheers guys