At the venue that i normally tape in, i usually grab sbd + aud. the only place i can put the aud source mics is on top a ~6ft shelf beside the soundboard. unfortunately, this shelf is also behind some tables. thus, the majority of the time, I have a fairly decent aud source, but very chatty. when i matrix the two together, the talking is audible in the quieter parts, but not as much of an issue when the band is in full rock mode. what do you guys do in this situation? i've been decreasing volume of the aud source whenever i can hear more audible chatter, but would like some alternative methods or insight.