Low volume kind to low frequency?

Hi all.

I am interested in buying some Magnepan 20.1 speakers. They go down to 25 Hz, which is fine, but not great. Spatial cues, pipe organs.

I tend not to listen to music at outrageously loud volumes. Is the main factor with the bottom end of the frequency specification moving a lot of air? Does the fact that at medium volumes, not as much air has to be moved, matter?

Can I listen to my pipe organ at a volume that doesn't tenderize meat?

Regards,

Rick