When you adjust the sound level so that the voice is nearly same as a speaking women in your room, the level of sweeps is between 75 to 80dB SPL(C), pink noise on one channel is also about 75 to 80dB(C). After having finalised EQ, you may want to adjust level to a known value : use the pink noise at the end of the wav files, which is in conformity to SMPTE2095 with rms value at -18.5dBFS. Adjust one channel at the target SPL slow with a sonometer in dB(C) and slow reading, and fine tune other channels by ear to same perceived levels. By ear you can adjust at nearly 0.2, while with a sonometer, it is difficult to be better than 0.4dB.