DDX is easily one of the best budget friendly sub series out there that pound. I have my ddx 15 on a rp.1500 with good electrical and it takes a beating plus more . I was amazed by this subwoofer since day one . The right enclosure is a must to get its full potential.
I love the build. Trying to decide what enclosure will make it dance. Haven't put power to it yet.
Single ddx 15 D2 on rp1200 in a 6th order. Gets LOUD for a single 15 in this price range but definitely wants more power than I'm giving it.