Have a movie of which someone from TBN watched and said the audio was understandable but it wasn't TIGHT.
We recorded the audio chiefly with a boom mic following actors and an ambient mic at a central point in each scene not on the actors so that we could have a realistic sound. Majority of scenes were interiors. When i told the guy from TBN this he said that could be the problem in that the ambient mic was causing a bit of an echo lending to it not having a tight overall sound on the dialogue. He suggested getting rid of the ambient channel.
My question? What would be my best bet to create as tight a sound as possible to put on that second channel once i take the ambient recording out?
"Tight" , as your associate calls it, is a very subjective term. There's no meter or scale for it. But if you want to increase the clarity of the audio, you might play with compression of frequencies in the range of human hearing. That "full" sounding DJ voice on the radio comes out of a box, a box with gates and compressors that emphasize certain frequencies. You have access to those same effects in post. Experiment with that, and with parametric EQ to drop out some of the ambience/room tone.