Hi, After the long wait, I finally received the remote control and dock last weekend.
Well, getting started is not exactly what you would describe as a great user experience … but o.k. - it’s all still beta. But, the new dock has a clear design flaw: after connecting it to the mains, it makes a high-pitched beeping noise - definitely not something you want to listen to near hi-fi audio equipment or even in the bedroom! And I bought two of these things …
Have you tried it with different power supplies? I don’t notice any noise. Also only use the included cable.
Have you tried this funny ferrite core device which was in the package?
Ralf
On Discord Marton mentioned that the ferrite clamp is only required when using PoE.
Yes, it reduces somewhat the amount of “whining”: the big one (Apple MacBook) is the worst choice, best is an 2005 iPhone (at the moment, I only have Apple wallbugs) with a Dell USB-A to C cable …
Yipp, no effect.
Ah, recent Remote updates (2.6.3./2.6.5) did the trick: adding/pairing docks now works (didn’t with 2.6.2) and noise is now down to a not disturbing level!
But the “button” on the dock is – errr –it’s worth revising.
It’s probably just you power supply that’s causing this as the remote firmware update doesn’t change anything on the Dock.
Hello,
if they use Z5U caps inside the power supply chain due to size/price issues, there can happen the inverse piezoelectric effect –> shape changing by varying voltage.
It is often to be observed in power supplies or even in the Logitech Performance MX mouse (not using the USB charging connection).
Another mechanism can be magnetistriction, but this needs “power” to induce the needed magnetic flux.
Cheers, tiki
Yes, that will certainly have an impact, and it definitely depends on the choice of power supply. But it’s interesting that, after the update, a before/after comparison clearly shows a reduction in noise – OK, so far so good.
Hi,
not necessarily.
If the PS voltage is the same, the device (using the “noisy” caps) should behave similar.
The SW change or update can, in contradiction, change the current drain from the supply, e.g. wake up/sleep - timings.
Or a (possibly slight) change in supply current may change the behaviour of an buck(/boost)-converter causing a different burst mode timing.
I could see these effects in own developments…
Cheers, tiki