Just had a diaphram fail in my 175 driver. It was original with the red wax seals. When I opened the driver I found the diaphram to be perfect but measured open with a meter. With a closer look I found the diaphram torn at the base of the dome. It was torn where the positive lead wire went across the back of the diaphram. In turn the lead wire was torn too. Is this just from old age or what? Anyone see this happen before?