Dome tweets can be 'sucked' back into shape with a common vacuum cleaner.
You do have to be careful as you bring the open (vacuum on) hose end up to the dome. Do NOT place it directly against the dome. Just bring the hose sucking end up toward the dome. Keep a few fingers between the flat around the dome, and the hose end. When the hose is in around a quarter inch or so away the dome will pop out and back into shape.
The crease line may still be visible, but the domes should work just fine.
I have done this a few times over the years.
The last was for my B&W 805s.
You do have to be careful as you bring the open (vacuum on) hose end up to the dome. Do NOT place it directly against the dome. Just bring the hose sucking end up toward the dome. Keep a few fingers between the flat around the dome, and the hose end. When the hose is in around a quarter inch or so away the dome will pop out and back into shape.
The crease line may still be visible, but the domes should work just fine.
I have done this a few times over the years.
The last was for my B&W 805s.

