Installed one of these with a RF 500.1D amp in a vented box tuned at 40hz. This thing bangs, it hurts my ears and brain when its turned up. Response is a bit sloppy but that is expected with the vented box. If your looking to keep your bass tight and clean go with a sealed box otherwise go with the vented box to get the most sound out of your sub. I didn't think that one 10" sub could produce this much bass. It shakes my mirrors and probably the peoples mirrors in front of me. If your thinking about getting this sub know that its a great buy, your getting a top quality product from RF that is built to bang.