MissionX
Keep it Silky
These things are stiff. I worked on one for a while with some success. Working on the other now and will continue so long as there is improvement. The Fs was reduced from 61Hz to 36Hz and I was able to measure Vas with my test box as I was not able to before. I'd like to leave them on a 12Hz signal at low volume for several hours unless that's a bad idea. I don't want to ruin my voice coils. The 12Hz signal seems to be quite effective at loosening them up. I'm using alcohol initially and then switching to Goof-Off which I think is acetone. I'd like to get the Fs in the 20s.
What crossover are you using? I have the factory, but don't think they would be appropriate for hifi, but maybe they are fine. Tannoy switched from the circuit board.And those will sound in great big enough cabinets. I have some ceramic magnet 15" tannoys I put in 9cu ft sugar scoops and they are end game.