I've also been tweaking away so I now have +/- 1 dB. There's a big peak at 125 Hz, so I'm going to fool with the first XO point (now approximately 150 Hz) to see if I can reduce the amount of EQ necessary there.

I'm beginning to think that flat may be right for reproduction (as opposed to reinforcement) because the producer has EQ'd the recording so that it expresses what he intended. Maybe trying to improve on the recording by adding boost or cut where I'd like it to be is the wrong approach.