I own a pair of NEAR 50MLs. Of late I have been hearing some sibilance from my right speaker. A frequency sweep revealed distortion in the midrange. Close examination shows what appears to be a hairline rip in the foam surround of the midrange driver. For those not familiar with the 50 ML midrange, it is a 3" diameter aluminum alloy cone. As the excursion is slight, the foam surround on the midrange is not buckled, but flat. It has a 3 7/8" outside diameter and a 2 1/2" inside diameter. Does anyone know of information sources regarding the exact material this surround is made of, where it can be found, etc.? As the surround itself is perfectly flat, I am contemplating fashioning a surround from raw stock, if I can find the right stuff. I have looked around the net, and have seen several sources for larger foam surrounds, mostly buckled, but nothing for this size or type. NEAR has gone on to different applications [outdoor speakers] and provides no more support for its audiophile line, so far as I can tell.