The original Electro Voice 70604 foam has been discontinued. This is The Speaker Exchange version of the 70604 tweeter foam used in Interface A, Interface B, Interface C, Entertainer, Sentry 100A, MS802, 889753A, 89478. Please note that these have a different density than the original. These will work for dampening and cosmetic purposes.
Measurements: 5″ outside diameter with 2.35″ cutout.
(This is the outer foam. You will also need the inner foam which is 70534)
Photo below shows EV tweeter with 70604 foam installed.
Photo below shows EV tweeter with 70604 outer foam and 70534 inner foam installed.