Hello, I just joined, primarily for the audiophile products. Looking at purchasing the NHT C3 speakers for our new living room. Space is about 15 feet wide by 33 long and they will fire long ways. Space is just for general listening, music room with all equipment is downstairs, so hoping they will fill it with sound nicely. Cheers.
Mar 18, 2024
Why doesn't it work with my DP-X1A?
Samsung devices have no issues powering the DACport. Even my old Galaxy S3 is willing to power it. However, my HTC One M9 gets the same ticking noise. When I used an OTG cable that accepted external power, everything worked fine.
I tried the same setup using my Samsung Note 5 and it lost 12% battery in 24 minutes. I then tried my Samsung Galaxy Tab S2 8 inch. It only lost 1% battery life in 24 minutes. Weird?
None of the host devices will indicate charging, if the host is already ON and CEntrance and external USB power are attached to the Y cable first.
If I disconnect the CEntrance (from the Y cable) and shutdown the DP-X1A it starts to charge via the external USB power. If then turn ON the DP-X1A, it keeps charging from the Y cable, even after I reattach the CEntrance :)
The Note 5 doesn't respond at all to Y cable charging, when it is off. The Galaxy Tab S2 will flash the gray battery charge icon, but won't show the green power level or charge percentage levels.
One extra weird thing I noticed was that if I disconnected the external USB power while the CEntrance was already connected to (and recognized by) the DP-X1A, it would continue to play using the DP-X1A power. No ticking noise. Strange.
Lastly, the audio quality is amazing on all devices (Extra Bass Included). I tested with my 64Audio U8s.
I wish there was a way to completely block power draw from the host device when using a Y cable (and external USB power), but the USB spec says the VCC wire from the host needs to be connected for OTG to work. So you can't simply cut it.
How about a CEntrance DACPort slim v2 with another micro USB port to provide external power directly. If the CEntrance V2 unit senses external power is attached directly, it doesn't pull from the host. :)
CEntrance came out with the DACportable some time ago, which is basically a similar version of the DACport Slim/HD but with a built in battery to answer the requests for a truly mobile dac/amp, not just a transportable one.
The Galaxy Tab S2 is a top performer and can hold a charge nicely. Even after 24 minutes connected to the CEntrance with no external power, only 5% battery was used. All other devices lost around 12% battery. With the external power connected to the Y cable, the battery level only jumps 1%. No charge indicator but it doesn't get drained. Not sure why Note 5 works differently. They all use Andriod 7. I will be getting a Note 8 soon to test.
I've always had bad luck with those powered Y OTG cables. With my last attempt it seemed to either power the OTG device and not allow data, or allow data when the power is disconnected. Kinda pointless.
With the Note 5 connected to my Y cable the amps pulled from the external power supply drops to 0.13 because some power is still being taken from the Note 5.
In contrast, when i connect the Galaxy S2 Tablet there is a 0.01 increase in amps being pulled from the external power supply. No power draw from Tablet?