John Phillips wrote:

I am not completely sure of the physics but I think bigger means
louder (capability) as well as lower. For music use I was not sure
if I needed a great deal of the "louder" element, and only the big
Bosendorfer
Grand gets down to 16 Hz - normal pianos only go down to 27 Hz I
think. Some of the percussion used by Ligeti is very low I suppose
but I was
not expecting to benefit from visceral impact much below 20 Hz.

Bigger piston area (cone size) = less movement for same pressure change =
bigger capability to go low or loud for the same excursion. Hence the 15,
18, 21 and 24 inch cones you'll see in pro subs.

Is it possible to over-size a subwoofer WRT the room? If there's no
risk the Storm 5 looks like a good candidate for a home test. Thanks
for the opinion.

I've run 18 inch subs in my living room (not permanently, just for the fun
factor) and they sounded fine - my home sub is a 10inch but I don't listen
loud.

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We are the keepers of the sacred words: Ni, Pang,
and Ni-wom!