Hi, I have a problem with my speaker. Its a 15 watt, and when I go past 7 certain notes start to buzz. I'm not talking about an annoying buzz due to a bad cable. It seems like my speaker is vibrating a lot. It only happens with certain notes, mostly with the C# on the 6th string.
What kind of amp? If it's a cheaper/older amp, the speaker may just not be able to handle certain frequencies.
-Guitar Gear-
1995 American Fender Strat, EMG 85 pup
Randall RH200 Head
Marshall 1960a Cab
Woods Acoustic
-Bass Gear-
Spector Legend 4 bass
Washburn Bantam bass
Hartke HA2500
Fender Bassman 410H
Play what you love, love what you play
Are you detuned a long ways down? If you are tuned way down on a small amp the excess amount of bass in your equalizing could be causing then. Either bring your tuning up, or dial back the bass setting.

Just something to try?
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