Question for you experienced Canpur or CP622B folks— there’s a vent on the back (upper portion) of the IEM, is this supposed to be open or covered by your ear? Does this have to do with the BCD driver and should the vent be “venting” at/touching your ear? Or is it supposed to be kept open to vent the sound outside of the ear? Trying to get clarification on this because I can’t seem to find any information on it at all. Lots of sound leaks through this particular vent, so I am not sure what it is supposed to be doing.
I know there’s a tinier vent right next to the 2-pin connector insert, too, but I figure that’s probably for pressure relief.