Exactly, however, the SVS subs are inherently very very sensitive to incoming signal unlike many many other Subs. So SVS will not have issues with waking up even at low volumes. That said, if one is listening to extremely low whispering volumes, then Sub is anyways not in play.
I never had issues with my SVS either going to sleep or not waking up even with -ve10.5 or -ve11.0 levels.
As mentioned in my post, you need to repeatedly run Audyssey till you reach the lowest gain possible, but not -ve12.0. If you can make it to -ve11.5, you are golden.
All subs are different and we need to find their sweet spot. SVS subs thrive when driven Hard by their own amp. High gain on the receiver and low volume on Sub works, but nowhere as good as low gain on the receiver and High volume on Sub. Try it out, experiment and see what works for you.
MaSh