signal from Zenith III?

[Willard]

I am having troubles with the active speakers (Dynaudio Focus 10s) to which my Zenith Mk III is connected via a Cat 6 cable. Sporadically, from time to time, the main Focus loses or drops the signal. The Dynaudio advisor has asked me to make sure that the signal coming to it is a standard PCM digital signal - 24 bit / 44.1, 48, 96, 192 Khz. Is this the case always for the Zenith? Forgive my technical ignorance! The Dynaudio man tells me that if the Focus receives anything it is not prepared to handle, a cutout like this will happen. Hence his question. I'd be VERY surprised if the Zenith were misbehaving, much less so if interference via the Cat 6 were the culprit.

Information and/or suggestions would be most welcome.

Willard

 

[Willard]

Physics indeed, but therein is the puzzle of the cause. Space is cramped (Victorian terraced style) so shielding has to be the answer. The superb Dynaudio is a sensitive creature!

 

[DK11706]

Physics indeed, but therein is the puzzle of the cause. Space is cramped (Victorian terraced style) so shielding has to be the answer. The superb Dynaudio is a sensitive creature!

Hi Willard,

I own a pair of Focus 50's, and I'm having the same issue with dropouts....Dynaudio support is not very helpful, just saying they have never seen this issue before and it is something in my home causing the issue.

The issue is the WiSA signal between speakers, it gets interrupted and causes dropouts. The WiSA signal is always active even when you use interconnects between the speakers (It is here the control data flows).

I did a 5Ghz spectrum analyze of my entire house, absolutely no interference but I still have dropouts. The reason for having the primary speaker on the right is because of the antenna design, the left side of the right speaker has a 15 dBm signal gain compared to the other side, so you want the left side of the right speaker pointing at the secondary speaker to maximize the signal between the two.

Please check the logfiles, you can find them using a browser, just type in the IP-Address of the speakers, in the second tab at the bottom is a "Download Logfiles".

You can find the file we are looking for here temp_data_logs.tgz \ tmp\log\nSDK (nSDK is the files name)

Look for entries like this:

20240306 19:26:15.264 [919.966] ERROR Summit: failed to request remote i2c read on slave 0
20240306 19:26:15.266 [929.986] WARN Dynaudio: Invalid reply while reading single-byte register 10 ------This could also be 13------
20240306 19:26:15.266 [929.986] WARN Dynaudio: Could not read slave hardware state
20240306 19:26:15.268 [929.986] INFO Dynaudio: Disabling audio transmission
20240306 19:26:15.268 [929.986] INFO Dynaudio: Wisa changed state to Disconnected
20240306 19:26:15.269 [929.986] INFO DynaudioMute: Force mute enabled
20240306 19:26:15.270 [929.986] ERROR Dynaudio: Invalid I2C request; not connected
20240306 19:26:15.420 [929.986] INFO Dynaudio: Stop alsaloop
20240306 19:26:15.425 [929.986] INFO Dynaudio: alsaloop stopped
20240306 19:26:15.426 [929.986] INFO Dynaudio: LED state changed from playing to error

Please report back what you find....Note, these errors will also happen during power-on. If you don't mind please send me the entire log file and I'll check'em (I might be able to see the Ip of the speakers, your UPnP server and control point.)

 

[Willard]

Dear DK1106,
Thanks for contacting me. I have attached the log file, following your helpful instructions. I'm of a geeky temperament but not accomplished in that domain .
Under the influence of someone who likes power-conditioning apparatus and other Chord products, bit by bit I eliminated some of the dropouts. Last was a Chord P6 power bar. One step at a time the dropouts grew less and less common. (Terribly annoying!) Finally, reasoning the EMI might be the culprit, or the last of them to be active, I bought some EMI shielding cable-wraps for the likely cables, grounding them to the powerbar. Since then, several weeks ago, there have been perhaps as many as two occasions, but I do go for days and days without any. QED?
Output from the television, first optical, then HDMI, and now back to optical is still giving me grief. I suspect the LG C3, not well regarded for its optical interface.
Getting rid of the dropouts proved, as you will already have surmised, EXPENSIVE. But now I can relax and pay full attention to the music. Even the Focus 10s are impressive.
The Dynaudio fellow I have corresponded with is friendly but not terribly helpful. My conclusion, for the above reason and others, is that Dynaudio has work to do. Beautiful sound but all too often fussy to operate.
Please do let me know what you find.
All best,
Willard

 

[Willard]

More on the above. My Focus 30s are about 2m apart, main on the right as advised, and are connected by a good cable. Most of the supporting power, digital audio and ethernet cables are crowded into a small cabinet space behind the TV, the Zenith in a cabinet below. Hence the setup is quite vulnerable to EMI from the proximity of mains and audio. The house is small, a Victorian terraced one built in 1900, mains power put in, I am guessing, relatively early in the previous century--long before current wiring standards. Strong wifi throughout. From this I expect a fair bit of EMI (if that's the right term).