I have this hard to find discontinued kicker 15. It's never been played. This subwoofer beats the block down in a good box. I came across two one lucky day brand new in the box after someone lost the storage unit they were paying for. I bought one and my friend bought the other. I built him a 4.0cuft ported box tuned to 32 hz powered by a skar audio rp1500d at about half power hitting 130-135 db.. just looking to trade or sell bc I have no use for mine atm. You can't find these anywhere anymore. No rush to sell so please no lowballers I know what I have.