Wich setup would be louder and why?

[Evil Purple 10+ year member]

//content.invisioncic.com/y282845/emoticons/ohsnap.gif.17c4c91be09a7a4a3995fb7145adac39.gif ^^^ right, rattlebrain. Now depending on brand and model of both subs and amps involved, the amp(s) could be bridged to provide more power for "x" ohm load if said amp is stable at that load. However, with the information provided....

80 is on the money.

my examples were if all condition were the same. voltage resistance and such

 

[cversion7 10+ year member]

Then,

80 is still "on the money."