As usual with my prototypes I started the photo documentation late, but will try to keep up and let you know how I got from A to Z.
I reconed the speaker since the first attempt had glue all over and did not really fit well. After mounting it in the frame I added one detail which sells it as a speaker, but will be totally hidden once it is mounted, the center domed coil cover. It is also deep enough that the profile picture looks like the cone extends back to the magnet.
June 22 update -
At this point I think it is safe to say that it is complete.