Decide on Mic Placement If you do want the two mics to be virtually exchangeable, keep their capsules close together while keeping them in phase as much as possible so that the vocal hits them at the same time. Many engineers will flip one mic upside down and position them grille-to-grille nearly touching.
Why do singers use 2 microphones?
Using two mics for noise cancellation. Combining outputs of both at equal gains, but in opposite polarities, will cancel ambient noise from each to a certain degree. ... Both microphones must be able to hear the sound source directly.
How Many mics do you need for vocals?
For classical music you might want to use more microphones to capture the ambience of the recording space, but for any other kind of recording then you just need one microphone for a single human voice. It's worth saying here that for any single instrument you might use two mics to make a stereo recording.