Just thought I’d show the difference with the product I use. You’ll need a bunch of Qtips, I do this 3 times with the last step using about 25 Qtips each making sure the product is cleaned from the domes. Takes me about an hour each. After, The third step is a bunch of Qtips rinsing any product from the voice coil and the rest of the dome, inner and outer. The product used. You can see where I missed a small area around the wires, that’s ok with me, sure it can be done but I don’t want to risk damaging the wires. Enjoy the Music.