Stupid Guitar Amp Goes Boooooom grrr uhhhh grrrrrnnnnnnnn

[KingNothing]

Hiya. Im borrowing this Randall 4 x 12 half. Its solid state. When we record, the guitar amp seems to be making some bad low sub tones that are pretty undesirable. Its almost like one of the speakers is vibrating or something. Im not sure what it is, its just this low rumble that sucks. Any ideas? How to eliminate? Thanks.

 

[Tweedville]

Overtones

It could be a speaker,but usually that sounds like a rattle or vibration.4-12 bottoms are quite often heavy with
undesirable low overtones.....does it sound this way in the room,or just on playback of recording?Have you tried an EQ in your rig to filter out the nasty tone?A parametric would help.If you are only hearing this sound on playback,try different mic positions,or a different mic.Even though we all love the sound of a mic'ed amp over "direct inject",it is pleasing at times to mix the two,if tracks allow..blending a tap of the amp's preamp out with the mic.
I don't know if this has been any help.....I don't know what else to offer,outside of testing each speaker seperately,or checking the impedence of the cab. Good luck!