he never used the subs, i bought 2 from him brand new. i recieved them looked them over, checked under the gasket, they where never mounted. the foam surround where it meets the mounting holes was in perfect shape. never been mounted. then i got a 330i bmw intead of the 5 series i was thinking about getting. and there is no way i can run 2 ported 15s, and it would be a shame to run these drivers sealed. so i am selling them and doing a more sq system. so lets be technical about it. they are not brand new sealed subs, they are never seen power or mounted subs, in perfect shape.