Also, I don't know what your arrangement was with the engineer, but unless (a) the engineer is producing a custom mix for you (i.e., not the PA mix) or (b) you have a 4-track machine or at least have room mics somewhere, your SBD won't sound very good, more than likely, even if you aren't getting overloaded. PA mixes sound pretty awful in many cases unless you are in a very large room where all sound is through the PA. None of the SBD feeds I have ever gotten would have been acceptable as standalone recordings.