Summary: I was suprised at the way the sub performed. I purchased one to begin with, and then i bought another. Having always used punch or kicker in the past, i was not sure how these would sound, but i was very pleased. I put them in sealed boxes and have 400 watt amp bridged hooked to them and they perform well. I will probably upgrage my amp to see just how much i can get out of them. The only issue i had was, they did not seem to want to reproduce the mid level bass well.