I have JL audio W7 13.5 inch subwoofer in custom box with a port. Also I have the matching amplifier JL audio as well the big one 1000 watt 1.5 ohm steady this matching set goes crazy if you know about this brand then you know what this subwoofer is and how this bass speaker and amp will sound this is mine and I bought it brand new so you know this wasn’t refurbished or anything serious inquiries only price is firm maybe slight negotiations. Brand new with out the custom box this subwoofer is $1800 before tax and the amplifier is $900 new before tax that’s $2700 before tax and still you wouldn’t have a box for the subwoofer so you know this is a great deal hit me up thanks.