I don't know if anyone else has had this problem, but when I hit certain notes on my guitar my speaker cone rattles like it has been punctured. This happens with all of my guitars when using this amplifier and only when I hit the F#. I'm wondering if anyone else has had this problem. I have a VOX AD15VT. I love that little amp and I am hoping that it will only require a minor fix. Any info or suggestions on how to fix this or what might be the trouble would be appreciated.
I have the AD30VT and sometimes the bass is too high and then the speaker vibrates pretty hard. Try if you still have the problem when you turn the bass knob down. Try it with Boutique Clean and US-Hi-gain.