Great subwoofer

First. Sonic's shipping department must be praised they are fast like 2 days fast almost every time. I've had this sub for about 4 months and it still impresses me. Even though it is in a sub optimal box at 2.1cft and 600watts rms from a NVX NDA103 @1ohm but even still it hits hard, this is also a unique experience for me this is the first woofer I've had we're I can tell it's louder after broken in I didn't do much to break it in either I just got in the car one day and it was noticeably louder witch gave me a big smile as I pulled off . Buy the sub. it is very durable as well as light and accurate you will be happy with it.