the new nautilus 805 will not incorporate the new diamond tweeter only the 803's and up and will have the option of utilizing a diamond tweeter. it is the nautilus 803d, d for diamond. it seems silly to make it available for the 803 and up but not everything below. maybe it would look too obvious that they goofed with the aluminum tweeter, it having a tendency to come across as bright with certain equipment matches, so they're doing it in phases but thats only speculation on my part.
