Regarding the buzzing, I've been able to consistently reproduce it using a tone generator at 250Hz while gently touching and releasing or gently tapping it with my finger. When I release the buzz occurs and then sustains for a second or so. Doing the same stuff, even
much harder, to the left earphone does nothing except make the expected thud.
If I leave the earphone alone while it's reproducing the test tone there's no buzz.
My guess was that when the earphone is operating, output from other drivers might be doing what my finger is doing: interacting with it in a way that makes it resonate.
Then I fired up ReBirth on my ipad in background audio mode with a full volume kick playing on the down beat at 60 bpm and then turned on the tone generator at 250.
I observed:
1. the buzz sometimes occurred on its own, but not often
2. the buzz would start if I turned my head
3. the buzz would start if I touched the earbud like before, but would last much longer, 3-4 seconds as opposed to around 1 second
After I did this for about 2 minutes (driving me semi-insane), the buzz stopped. Even if I tapped the earphone I couldn't seem to instigate it. I waited 5 minutes and then tried it again, both test signal alone and with the kick drum, and no buzz.
To be honest I'm even more confused about this than I was before this little stunt. Is it really a defect, is it a problem with my right ear, or is it a matter of the right earbud needing very specific burn in as a result of a sublet defect? If anyone has any ideas I'd be thrilled to hear them. For now I'm going to go interact with the outside world and will leave the 846s to contemplate my new composition, "Four on the Floor with 250Hz" for a while and see how it is later on.
Regarding Amazon shipping/returns, with these I think the combination of it being a "fulfilled by Amazon" and not "sold by Amazon" with the price makes me wait for them to receive and fully process the return before issuing a refund, plus making me provide my own return shipping. Like you guys I've had other stuff refund immediately in the past and then have Amazon give me a printable UPS label.
Truck, what you said did occur to me as I was complaining a few days ago. However, it's possible that our fellow 846ers who had to wait months might enjoy other stuff, like not having a snowstorm every three days.