Sorry for the this vs that thread, and I know the two 15's have more cone area then the 1 18" but still want opinions since the AQ sdc 2.5 is only a 600 rms sub. Also enclosure/install dependent but both powered by a sundown 1500.
K cool, its just hard to believe he did 155 with the AQ's tho, which I know he did, just sayingyou just answered your own question.
no way in hell you can do 155 with 2 bl 18's