So my guitarist just got a Marshall half stack..its the one seen here http://www.musiciansfriend.com/product/Guitar/Amps?sku=482807 We did some recording yesterday and were getting lots of rumbling when playing back the track through studio monitors. We close miced the cab with an SM-57..the signal then went to a 12 channel Behringer Eurorack mixer and then to an M-Audio Delta 1010 sound card...we are using Sound Forge..what could cause the rumbling?? The bass on the head is only set at 10 o clock, mids are at 11 o clock and the highs are at about 2 o clock..would a compressor clean this up??
The best thing you can do to help yourself is to post an mp3 of what you're specifically talking about. "Rumbling" can mean a number of things. A compressor probably won't help, regardless of what it is. Distorted electric guitar is already really compressed.
You might be clipping the mic. Try recording at lower volumes(yes I AM aware it's a half-stack). Also make sure you are not clipping in the post-mic areas of the signal via boosting volume or bad/wierd equalizing. Like msquared said, sounclips are very helpful for these sort of problems.
thanks for the help so far..I was gonna add a sound clip tonight but have not received the file yet from my drummer...I will post it as soon as its available.