For the price, they are tough to beat. Had mine for 1 year, in a sealed box, bridged to 2 ohms. They slammed pretty good for a $150 pair of subs. They did blow out though. After 1 year of hard work. They were pretty impressive though, as I had one of the louder systems in town. It made my windows and doors in my 1999 S10 blazer flex. We bounced a gallon of water on top of my truck, it was jumping 6" or so at a time. Was hilarious. These are my 3rd set of lanzar subs, and I am finding they aren't built to last, so I am going to quit playing games and step up to something nicer. Going soundstream 15s with the matching tarantula amp. Should be louder than these were by a long shot. Anyway, like I said, for the money, they are ok. If you want subs that last and are planning on pushing them to their limit. Don't buy them. I was pushing them pretty good and they only lasted a year.