[TV MAN]

Now that I have the 70 rebuilt and working decent, I decided to tackle this speaker. It sounded pretty bad with a lot of rasping and popping. I unsoldered the voice coil leads, removed the screws and lifted the cone out of the speaker. A word of caution - part of my speaker cone was stuck to the metal frame and started to tear. I used a knife to gently remove it. I didnt have any speaker cement, so I used fabric glue to repair. Also, make sure you guide the screwdriver with your thumb so it doesnt slip off the screw and puncture the cone.

Here are a few pics.
   
   
Here was the problem. The air gap is full of a lot of metal shavings. I cleaned out with a small screwdriver, then blew out with compressed air.
   

I put things back together. Remember the order of the washers in the screw on the spider. I put this screw in first. This centered things. Next I put the outer screws, loose, then gently tightened, pushed the cone to check, then tightened up. A mistake I made was cementing the cone where I ripped it after I reassembled. I had a noise from the tear between the metal frame cone ring. I had to remove, glue the part under the cardboard ring, let the glue dry, then put back together. (I didnt unsolder the VC leads for this) This time, it sounded good.