Cone area is not the only metric of a speaker's performance. Xmax, or cone excursion also determines output capability. To that end, I went with a Sundown Audio EV3 12" sub in a sealed 1.25 cubic foot box.....and it sounds amazing. Way more than 3 dB louder than the JL 10w3 and it isn't even broken in yet (if you believe in that). So far I've been very impressed with the Sundown 12" even with it being an entry level sub especially since it was $139 versus the cost of a JL Audio 12w3 which would have been closer to $300.