yeah, the installation process was kind of weird. i was going to pay a local shop to build the box and hook it up, but they were taking forever and literally didnt know what they were doing (the install guy was going to wire my DVC 2ohm sub to 2 ohms supposedly). so i paid for the box and got my install money back, and then wired it with the help of a friend. maybe i did something wrong (i think i did it right, though) or maybe the box is a little off. i have it on an orion d1200, rated at 600w at 1 ohm. its decently loud, but like i said, not nearly as loud as the kenwoods ( theyre running of a monoblock kenwood amp, 500 rms @ 2 ohms, in a bestbuy prefab sealed box)