Today for a bit of fun i miked a grand piano with an NT1-a and a custom SDC (Think NT5 bred with NT3) on the top (nt1a over where the strings cross, the other on the higher trebles) but i also miked from under the soundboard with two nt5s. With these sounds combined, panned hard accordingly, the piano sound is huge and lush. Just wondering if i should reverse the phase of the mikes under the piano or not - Seeing as they would have a natural reverse phase anyway, the particular frequency boosts shouldn't be too great, right?. Also, since the mics and sounds are so different, is it an issue? I really love the sound that i'm hearing, but i want to know whether that's just a fluke due to the eq implied by mixing these sounds together, or whether it is a repeatable set-up that will sound similar next time...