Ok this is my question :
i m recording 3 amps for one take ( guitar signal splitter ), each cabinet mic ed by a sm57, ok now there is the question, how can i ( before recording ) be sure about no phase problem between the 3 mics?
i heard about a Pink noise technique, but i m concerned about difference level between the pink noise on each cabinet and the true sound on each too so the phase will not response the same to the mic.
Any ideas ?
amps : Mesa road king, Marshall jcm 800 and Vox ac 30.