[klondike98]

Tom, here's the P-27 speaker out of the cabinet with some measurements on it.  Not sure if you are trying to find a new cone to do a recone or find a replacement speaker & frame.  The cone including the part that is glued down to the speaker frame has a diameter of 5 and 9/16 inches.  The opening in the frame where the cone is free to vibrate is 5 inches across.  The frame itself is 6 inches in diameter with the 3 mounting holes equally spaced 4 and 5/8 inches apart.  The mounting hole center is 5/16" from the edge.  

[Image: https://dl.dropboxusercontent.com/u/5462...peaker.jpg]

Let me know if you need more.