memphis amp fades out

Check....other than sloppy work..all else appears as normal. This is what I do for FUN!

Uh-HUH, can someone tell me if this is the way that Memphis rigged the terminals back then? Sorry for crappy pics.. There is a hole drilled in the end of the threaded anchor bolt and the speakers wires are soldered on. This is the way it was sold from MASA in San Rafael, California, United States. Look a little closer and you'll discover something odd about the nuts holding the terminals on. I watched him pull this out of the box sold as brand new and set it in the center console enclosure. At the time I did not inspect it. Why would I? I have been having non-stop issues with this sub and never thought to see if the brand new sub was actually brand new. As well as the crossover that blew the channel, when he bought a new one from some shop in Berkeley, California, the manual didnt even match the product. The box it came in indicated chrome black as the finish,(similar to the one that blew) but the actual product they sold him was some charcoal dull finish. Finally after months of ill performance he decided to remove the sub and thats when/how this came to my attention. Also what I thought was a air leak around the downfire sub, was actually the rubber surround tearing apart. We braced the enclosure, added another layer of MDF to the baffle and it has held. Now the warranty has expired, a lot of time has passed, I been cursing this brand since day 1.   Now after closely investigating these problems, I've realized where things are going wrong. These things dont happen to me when I actually make the purchases. I never thought to verify the legitimacy of something wrapped as it would be straight from the manufacturer. This @$$H0l3 needs to know the trouble this has cost me, not to mention Memphis' credibility ruined, just so he could make a quick sale? The one and only Memphis system I've put in and the one and 1st system ever to have not exceeded expectation. Im bent over this matter ....Comments and thoughts please!This is what I do for FUN!