yeah 2 of those is a 1 ohm load.. my ppi p1k is good amp.. u can find them for about $165.. look at woofers etc.. that said u can get better subs for the $, less in fact especially if doing ported box.. look at sundown sa and fu 750, american bass xfl all cheaper than w3 and beefier, 1 fu 750 12 or 15 with all the ppi amp to it in right ported box is loud..