this is the text in the emails from rich to me..............................well i dont know who told you that but i have never herd that before, i have coils out of both subs that i can send you and you can see that they are exactly the same thing. the koves and the ssx's have 4 inch coils, the koves were only made in a dual 2 ohm copperline coil. they are the cylinder wire and the ssx DUAL 1 OHM coil is a flat line aluminum coil, if the koves were availible in a dual 1 ohm it would be the same. these subs are no different, the only different is that the koves are the original models and the ssx's are the new and improved models. when we took the model over, we upgraded them and made them stronger and more durable, towards the end kove dident have the money to make them with good parts, they started haveing us make them with cheapr glues and just little things like that. but the coils always stayed the same and the spiders also. i have some pics of them and ill send them with this email, and you can compare the 2 and see that the only real difference is is that the tensil leads in the koves are copper and we changed them to a thicker aluminum more durable tensil leads, the tensil leads on those koves is the first thing that will go, then maybe the spider will come loose or the surround will detatch either from the cone or from the basket, but the spider and coil and cone are pratically indestructable. so if one day your just poundin the crap outta them and all the sudden 1 stops playing take it out and first thing, look at the tensil leads from the cone all the way to the terminal, and chances are the tensil lead burnt out somewhere, and if your good you can repair it. but that is really the only thing that we improved, that was the only flaw with them. ok in these photo's the 1 with the dual spider is a treo ssx that we made for our chevy extreme show truck that has 2 of the ssx's in it with 6000 watts rms on the 2. we made these with 2 of the spiders just in case if 1 of the tensil leads failed, but on the new spiders they are a aluminum sliver tensil leads and are bigger, i actually have a pic ill add but its from an 18 ssx dual 1 ohm. but you can see the difference in the leads and why we upgraded, and then the 1 with the full cone is the kove coil, sadly to say that it dosent have the dust cap on it because i took it off and put a different cap on it so people thought it was a different woofer. but you can see that there is literally no difference in the 2, they are exactly the same, the only difference is the spider on the ssx's are now aluminum and are a bigger guage wire and on the dual 1 ohm ssx's the coils are the flat line coil. but like i said if the kove came in a dual 1 ohm it would also have the flat line. but as of right now i dont work for kove any longer, i am too ill from my arthritis and am just unable to handle the work any longer. i just added pics of the ssx 18's with the old spiders and then 1 with a new spider, then an 18 ssx and a kove u-2 sitting on top of the 18, then a pic i a kove rebuilt with a black spider with a silver tensil lead, then another kove to show you that it has the same spider and tensil leads as the old ssx's and then you see that they ssx's used to be built the same way and all we did was upgrade the spider, the proof is all right there, if you have any other questions just ask and ill try and ansewer the best i can. trust me bro you have a set of 2000 dollar subs for only 575.00 you got a deal of a lifetime.