HI everyone. I have been following this forum for a while, but never posted before .I had nothing to add since I have no gear-knowledge ..... Today I bought a Hartke 410 XL cab , wich I am running with a SVT-3PRO head at 8 OHMS. The sound is OK (in fact, a lot better than just "OK") and I am very happy with it. Just one strage thing caught my attention and made me write this post: When I´m playing rhythmic patterns( with a lot of ghost notes and all that) the cones of the cab seem to pop-out in a very exaggerated way .I "hit" the strings with my right hand (mmm.. hard to explain... Is when you hit the strings to give a rhythmic feel when the metronome would click......Like that feel that Wooten gave to his "Amazing Grace" ) and the cones just jump out. The cones do not jump while playing the notes , just with the "hits". My questions is: Is this normal ? Am I destroying the cab? What can I do? By the way , I´m playing with a Ibanez 406QM. For your time , patience and help, thanks in advance.