Couple EQ references that might be interesting to experiment with...
ADA MPQ-1 "-Boston- Curve" Preset: Gain:2dB, 40Hz:0dB, 63Hz:3, 100Hz:4, 160Hz:5, 250Hz:6, 400Hz:0, 630Hz:-3, 1KHz:-3, 1.6KHz:-3, 2.5KH:0, 4KHz:3, 6.3KHz:4, 10KHz:6, 16KHz:6
Pic of Scholz's eq settings