Chess,
The speakers were calibrated by placing the SPL meter at the sweet spot 8 feet away from the speakers, playing in-phase pink noise, and adjusting the gain until a reference level of 69dBC was reached. This 69dB reference level is achieved on my 80s when I have my Denon gain set to -20 (about 1 Watt). This is with no sub. With my 600 on, the SPL climbs to 81dBC. Interestingly enough, there is no difference in SPL level between direct and stereo modes or between mojo toe-in or facing straight ahead.
I wish I had some way of auto-adjusting the gain similar to what Axiom, Paradigm and others have. During calibration, I kept notes of the master gain level and had to adjust the gain between speakers. It's not ideal, scientific or a proper A/B test. All of these speakers however are so different that your audio memory retains them quite well.
For reference, here are the main gains per speaker to achieve the same 69dBC level as the 80s:
M60: -19.5
M22: -15
M3: -13.5
Mystery speaker: -13.5
All of the above speakers were connected to the MojoSelector.
