I bought a kit to refoam an M&K MX-70 dual 8" sub. The vintage M&K subs are the best out there, especially for music, and I wanted to bring this guy back to life. The kit did the trick, except I tried a shortcut and used the raised gasket as a centering device in the final gluing step. Big mistake! Worked for one, voice coil slightly off-center for the other. Follow the instructions! I did the messed up one over, following the instructions, works great. Had to play with centering a bit; work fast before the glue dries! Push and pull the cone to make sure it is free and clear. Now my small footprint dual 8's rock harder than my ginormous 12" that has more power... Kudos to Springfield and their customer service; they got me a single replacement out same day on a Friday afternoon - real people selling real products with pride and care!
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"I have successfully rebuilt my 2 kicker L7's. I just wanted to take a minute and thank you guys for the videos. Without them it would have been a waste of time and my subs would have been paperweights, instead they are pounding better than when they were new!!
Thanks again and have a happy new year!!"