Quote: Hi! I would like to ask you if you can measure the exact dimension for the driver of HA-S500. Whenever you find the time during your experimentatios with damping material(s). I am inclined to do similar once I receive my pair. I see it will be a VERY tight fit or mission impossible for my proposed rebuild of JVC HM-200E, particularly regarding height/depth of the driver, so please make exact measurements, down to a tenth of a mm. Is the metal driver possible to be separated from the plastic collar plate around it or is it moulded in it once and for all ? Please take care while working with this gem - it would have been sad to see it demaged this way. Above all, enjoy yours !