From what I've been told, doubling, tripling, or quadrupling the tinsel lead will NOT fix this issue. And yes, it appears that his sub has failed at the exact same joint every other sub fails with this type of tinsel lead. It is the joint from tinsel lead to coil lead. It is the last thing to fail in a subwoofer, which is a good thing in this case as it proves that the surrounds, spiders, coil, and everything is extremely well built. My theory, it's that type of tinsel lead that is the culprit lol. I can't honestly say I've say the flat ribbon style lead fail this way, at the joint that is. I am just putting together common things I've noticed with that joint failure. 1 - high power subwoofer (1800rms isn't small power), considering Q has put one of 2500 free air 2 - round tinesl lead 3 - POF - tinsel lead to coil lead joint 4 - Every other softpart in tact 5 - Discoloration in the tinsel lead 6 - Korean made amps This is just my opinion, so take it for what it's worth. My personal experience to support my statement. My same exact Crescendo BC5500, I ran to my 15" SSA Zcon for over 8 months, no failure, and is now still being played in another vehicle. Keep in mind the zcon uses flat ribbon coil tinsel lead. SSA Evil, 3 months after install, tinsel lead to coil lead joint fails. Just now recently "patched" it up via solder 3 months ago, it has failed again.