Unfortunately, I had to send my pulse, because after 2 weeks really great pleasure, I once tried an audio book, and since it then unfortunately with joy.
The small tin regulates apparently in silence once the volume down (about 0.5 sec silent => volume is reduced) to well to minimize the noise. Once then just come back a sound, the speaker adjusts the volume upward back (fade in).
For music not a problem, a big problem in spoken stuff :(
It is almost always the beginning of a sentence swallowed, often just thinks their asses part in, but if it is the name or another, it will get frustrating over time.
For 160E (my purchase price) / currently 199E is so unacceptable :(
On request from the support of JBL in Germany I got a well half on German Google translation level response that there are no plans to fix this "feature" via firmware update times.
Unfortunately not to use so for music / effects lovers the best speaker, but spoken: ((((
PS: of course thought so maybe I'll just have this effect in language true, but on amazon.com can be found on the product page JBL pulses equal to 2 recessions describe exactly the same behavior.