I recently acquired a ULD-18 ii in walnut. The foam surround looks to be in great condition for its age, maybe because it's been in AZ for most of its life, or maybe the surround was replaced. Regardless, there is a small tear in the foam, about a half inch long. I assume that would affect the performance, but I also wonder if operating the driver with the tear can cause more damage to the driver? Is there any way to repair it without replacing the foam? As for replacing, I've found sites that have Velodyne specific replacements for 15 size and smaller, but only generic replacements for 18's. What's my best bet, one of the custom makers? Does anyone have the measurements?
Finally, I would like to remove the driver and take a look inside. Is there any concern with doing so? Anything I should check for? I know the servo is connected because the cone tightens up when I turn the amp on.
This is a beautiful piece of equipment for being 20 years old. Thanks for the help.