Michael, as the previous replies indicated, about the only significant point is that the setting on the sub level control when doing the auto-calibration shouldn't be such as to result in a receiver sub level setting close to the extremes. For example, if the result was -8dB or lower on the sub calibration, set the sub level control lower and re-run the auto-calibration so that the level on the receiver setting will come out closer to 0.

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Enjoy the music, not the equipment.