Play the dialogue through a pair of ordinary stereo speakers with minimal bass, but not too much treble to make it sound tinny, in a small to medium sized room. Don't have the volume set too loud, just enough for the mic to be able to pick the dialogue up without creating background hiss. Place a mic about 2 - 6 feet away from the speakers Depends on the room size ect so a bit of trial and error to get the best sound here). Now play the complete dialogue track and record it using the mic (don't forget, like i did once, to have a timecode tone at the beginning so you can sync it with the main dialogue track at a later stage). Once you have the recording finished sync this new track with the original and play about with the mix levels until you get a natural sounding dialogue track. Maybe a slight reduction in the bass frequencies on the original track may eliminate the "too close to the mic" effect that you mentioned. You get a more natural reverb effect this way which could help bring the new ADR more inline with the original studio track.
Its a bit of trial and error with this method but it can help recreate that "on set" sound.
hope this helps