Volume's role in sealed enclosures?

[Trendkill 10+ year member]

What would the difference be between an FI-Q 12" in a .8cuft sealed enclosure and the same sub in a 1.5cuft enclosure, all other things being equal? The recommended sealed volume is .8-1.5cuft.

Here are the rest of specs if any of it matters:

Fs: 28.4 Hz | 27.1 Hz

Re: 0.7 Ohms/coil | 1.4 Ohms/coil

Qms: 05.39 | 5.63

Qes: .49 | .48

Qts: .45 | .44

Mms: 211g | 231g

Cms: 0.15mm/N | 0.15mm/N

Sd: 481cm^2 | 481cm^2

Vas: 48.3 l | 48.3 l

Spl: 85.4dB 1W/1m | 84.8dB 1W/1m

Bl: 10.4 N/A | 15.1 N/A

Xmax: 27mm

Rms: 1000W

Sealed box: .8-1.5 cuft

Ported box: 1.8-2.5 cuft @ 28-33Hz

Sub OD: 12.500”

Cut ID: 11.125”

Mounting depth: 7.000”

Displacement: 0.16cuft

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[BJ The Man 10+ year member]

The smaller box will make the sub more punchy and stuff while being less efficient.

The larger box with be more efficient (louder off of less power) but with less power handling. it will also increase low end response.