same amp different size subs, which is louder?

[talon2nr7588 10+ year member]

which would be louder, 2 15" L7s or 2 12" L7s both of a kx2500.1? the 15s are in a ported box 5 cubes per sub @ 33hz. the 12s around 3.5 cubes per sub @ 33hz. what would be difference in sound as far as SQ goes?

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[Johnny Drama 5,000+ posts]

Chances are that the 15" subs will be louder due to cone area and displacement.

SQ, I dont know.

 

[skmfkr 5,000+ posts]

sq increases when you turn the volume down