vibration...cab problem?

[somata]

so i played a little this morning before i left for work, and i was getting this really annoying vibration...when i'd hit a heavily palm muted open b on my 7 string, about 3/4 of the way through the note's decay, there was this vibration that seemed to be coming from the (mesa traditional 4x12) cab. it was there on several settings (different eqing). the sound is not a blown speaker sound--at least i think so. my guess is that maybe a speaker has loosened up and things just need to be tightend down (i pretty much only play my 7 string any more, so theres a lot of bass rattling around) but since i had to come to work and didn't have time to figure it out, its going to drive me crazy all day, and i thought i'd see if anyone here had any other advice (or consolation!!!) my set-up is ibanez 7620>>>>dod bass eq (boost and shape the stock pups until i get an evo in there)>>>>>johnson millenium 250h run in stereo>>>>mesa 4x12.

thanks!!!!

[NickFlyMan]

most likely its the speakers just loosening up. it happens to me every couple months. you just take off the back and tighten them up. no big. hope this helps

[somata]

as it turns out, it seems to be the cab vibrating on the floor...never happened before, much have bumped it or something. wedging my foot under the front corner made it go away. although i think i will pop off the back and snug up the speakers a bit.


thanks!!