I will say this again. THEY ARE NOT V RATED. If you find where DeTech or Kellyco claims this cut and paste and let us see. They have tuned them to work better than the older ones with the Spectra. This is what they claim. I don't yell, I highlight.
The White coil is to address a heat concern but are otherwise the same as the newer Black ones. Unless the new ones can run boost they will have no performance increase. Some of the old ones can run boost. They don't claim this because only some of them will. This is not my opinion but what I got from the only distributor in the USA. If you don't believe this buy a new 10x12 and sell your old SEF. If tuned better they will run a lower signal% but unless the one you have is overloading there is nothing to be gained in the way of performance.
The new DX1 is shorter but the only change was to shorten the PVC tube. Many people ran out and bought the shorter one. Mine went bad at the strain relief. I had to shorten my tube to fix it. Looks and works like the new ones.
People are attributing gains to the SEF that I can't see anyone is claiming. This could be wishful thinking. Think about this, is Whites making V and non V rated coils? The answer is NO. I can't see them making one for the V and then another for the MXT or DFX. Its easier to make the black and White one on the same line, it's a cost thing.
