mics and phasing

[LarryPD]

If I have two people on a set (video) and each is wearing a omni lav, I have to turn down the one not speaking and vice-versa in order to prevent phasing. (If that is not the correct term, please correct me. I'm just trying to learn). Manually doing the faders on the mixer works "ok", but during a lively dialogue, it turns out best to do with low audio quality than to lose parts of back and forth comments.

My question is this. Can I put two lavs on each person (I'll call one of them the main and the other an aux so each of two people have a main and a aux) and with xlr adapters that switch pins 2 and 3 on each aux, mix with the main mic on the other .... hmmm ..... In other words, add together at the mixer, the main mic from one person and the aux from the other in order to cancel out the speakers voice at the other persons position? Sheeeshh... I don't know if I can say this right.

Hopefully someone can get what I am asking here. I want to leave both mics up and not have the phasing problem.

Thanks, Larry

 

[Farview]

Unless you pan each person hard left and right, you will cancel everything. Are all lav's omni? I would think that would cause problems like the one you are describing.

 

[AGCurry]

Reversing polarity on one mic will not fix the problem unless the two mics are 180 degrees out of phase, which is HIGHLY unlikely. The best solution is to use directional mics (many lavs are directional).