I forgot to post some info. The cost is 249.00, power handling is 1000 watts (been tested at well over 2x that without exceeding xmax) 3.5" point to point excursion. Dumax verified 2" of linear point to point excursion. It has more displacement than my small block in my '66 chevy (340 cu in of displacement for the sub, 327 for the chevy). It out displaces all of the SPL subs on the market.

This sub can't be beat for the money, and possibly can't be beat with any money amount of money...

It is an 18" sub that weighs ~55 lbs. The sub on the right side of the pick is an Adire Audio Maelstrom which is a monster as well, but looks wimpy compared to the blueprint driver.