ultra coaxial Cable Problems

[wei]

When I connect my ultra to the coaxial amplifier, I sometimes hear a sudden interfering current sound from the speaker. After searching for the problem, I found out that it is a problem with the computer. I plugged in and unplugged the power cord of the host, and there was a sound of current. But at this time, my ultra was not connected to the computer at all, and the power supply was plugged into a different place.

I originally wanted to know if there was interference from the computer's WIFI or Bluetooth. After turning off WIFI and Bluetooth in the bios, the situation was the same. Later, I tested the RCA and optical fiber outputs, and there would be no such problem. Wiim Home has also turned on and off all areas that may be affected, and the situation is still the same.
I'm wondering if the possible reasons are: 1. My coaxial cable is a normal RCA cable, not 75 ohm. 2. There's something wrong with my coaxial output.

 

[Mr Ee]

Welcome.

Sorry to say, but I'm finding your post a little confusing.
Can you please explain your setup?

e.g. PC connected to wiim ultra via optical?
Wiim ultra connected to what amp via coax?
I have used a 'normal' analog rca cable (50 ohm) for a digital coax connection before, and while not technically ideal it was no different from a 75 ohm 'digital' one.

What do you mean by "sudden interfering current sound"?
When do you hear it? e.g. during songs, between songs?
Does this happen no matter how you play music, such as streaming from spotify, tidal etc, or just when using the pc?
What are you playing from the pc that seemingly requires a physical connection?
Do you have any other device you can test the coax with?

Of course, if optical and rca work then you could just use one of them, but I completely understand wanting to get to the bottom of this coax issue.
Sorry for all the questions, just trying to understand what you are doing / how you are using the ultra.

 

[Mr Ee]

Ok, I've read and reread your post a few times and think I understand it better.
When you hear this noise, is the only connection between the ultra and the amp the coax connection?
If so, what happens if you connect the rca between the ultra and amp but still use the coax connection?

 

[wei]

歡迎。

很抱歉，但我發現您的帖子有點令人困惑。
您能解釋一下您的設定嗎？

例如，PC 透過光纖連接到 wiim ultra？
Wiim ultra 透過同軸電纜連接到哪個擴大機？
我以前曾使用過“普通”模擬 rca 電纜（50 歐姆）進行數位同軸連接，雖然從技術上講並不理想，但與 75 歐姆“數位”電纜沒有什麼不同。

你說的「突然出現幹擾電流聲」是什麼意思？
你什麼時候聽到的？例如在歌曲期間、歌曲之間？
無論您如何播放音樂（例如從 spotify、tidal 等串流播放）還是僅在使用 PC 時都會發生這種情況？
您在電腦上玩什麼遊戲似乎需要實體連線？
您還有其他可以用來測試同軸電纜的設備嗎？

當然，如果光纖和 RCA 都可以工作，那麼您只需使用其中之一，但我完全理解想要徹底解決這個同軸電纜問題。
抱歉問了這麼多問題，我只是想了解您在做什麼/如何使用 ultra。

I'm sorry, I'm using translation, so some words might look a bit strange.
I plan to use a PC as the source.
The current connection method is
PC (optical) → super (coaxial) → Hegel amplifier → LS50 Meta

I connected both the RCA and coaxial at the same time and switched the output. The RCA output has no issues, but the coaxial still experiences interference noise from my speakers when plugging and unplugging other electrical devices. Additionally, while listening to music, there are occasional sudden interference sounds. I'm wondering if there is a problem with my coaxial output.

 

[Mr Ee]

I'm sorry, I'm using translation, so some words might look a bit strange.
I plan to use a PC as the source.
The current connection method is
PC (optical) → super (coaxial) → Hegel amplifier → LS50 Meta

I connected both the RCA and coaxial at the same time and switched the output. The RCA output has no issues, but the coaxial still experiences interference noise from my speakers when plugging and unplugging other electrical devices. Additionally, while listening to music, there are occasional sudden interference sounds. I'm wondering if there is a problem with my coaxial output.

Maybe try one of the cables you're using for the rca connection for the coax connection to see if changing the cable helps.
Sounds like noise on the house circuit is coming through the ultra (or super ) and into the hegel. Other sounds could be things like fridges turning on.
Are the ultra and hegel plugged into the same socket or powerboard? Can you try plugging them into different sockets?
Unless you have a specific desire to use the hegel coax input maybe use optical instead, seeing as that is electrically isolated.

Unrelated, but what are you playing on the pc that requires the physical connection to the ultra?