15,800 @49.5yo but it clicked on suddenly as if there was nothing happening before it. If it is a continual sweep then my hearing should fade in right? It was a pure turn on transient. I'll check it out.
I didn't think I could even hear that high anymore. I was playing test tones in JRiver the other night, I couldn't hear shit until it got down to 10k, I thought my ears were shot. Later I realized I was sitting at the computer which is beside and behind the speakers, far away from the HF beam of the tweeter.