[DavidK]

So today's primary task was to prep the speaker panel...and, yes, I know it is just plywood and won't be seen but it got sanded (both sides, edges, and around the hole).  I will either seal the face with poly or paint before covering with cloth, and the back will get stained to match the interior and poly'd.

Now for some questions...
1. Do I use some rubber washers to "float" the speaker on the board or mount it firmly to get some "subwoofer resonance" from the panel too?
2. As you can see, I removed the broken cone and planned to sell/donate the Field Coil basket but...
   a. How available are replacement cones for this speaker?
   b. Is it a DIY effort to glue it in and wire it?
   c. Can I test it "externally" and, if so, what kind of power source does it need and can you feed it a Red/Black from a stereo amp?  It has a 3-pin plug.

Thanks for any assistance!