The sub approach is fine, and the settings sound reasonable.

If you use the same calibration technique with a different sub, you will still end up using the same volume setting while listening even if the amp has more power. It may sound better, of course, but unless you are really pushing the 7075 to the edge of its limits the differences will be subtle.

Any other Aperion owners around here with any thoughts on how much power it typically takes to let these speakers strut their stuff.