<p>I'm using a -25Db attenuator cable (<a href="http://www.bhphotovideo.com/c/product/767986-REG/Whirlwind_WHH4NL3_5_WHH4NL3_5_Line_to_Microphone.html" rel="nofollow">this one</a>) to connect an audio mixer to my camera. Now, I've tested the cable by connecting my DAP to the camera, and it works just fine. But when I connect the attenuator cable, even without an audio mixer plugged-in, I hear background noise. When I turn on the audio mixer but don't have any input sources for it, the noise is even louder. When I connect a radiomic to the mixer, the loud noise is still there, coupled with the audio from the microphone.</p>

<p>Can someone help me figure out what's going on here? Am I somehow using an attenuator cable incorrectly? I doubt it's faulty considering that connecting a DAP to my camera results in a good, clean signal and no noise on the line.</p>

CC BY-SA 3.0
2016-03-21T21:54:19.263Z
What is a DAP??
Hans Meiser
CC BY-SA 3.0
2016-03-21T22:01:05.663Z
did you check if the input volume is somewhere in a decent range? Or is this auto level control? What camera are you talking about?
Hans Meiser
CC BY-SA 3.0
2016-03-22T02:38:43.187Z
@HansMeiser DAP = digital audio player. There is a level control, I've tried going up and down, the noise is still there. The camera is Sony a7R II.
Dmitri Nesteruk
CC BY-SA 3.0
2016-03-22T04:24:23.590Z
What kind of mixer do you use and did you try to connect it with a regular (non attenuator) cable?
Hans Meiser
<audio><cable>
Getting weird noise when using an attenuator cable
Dmitri Nesteruk
# Getting weird noise when using an attenuator cable

(Asked by: username_0 on 2016-03-21)

I'm using a -25Db attenuator cable ([this one](http://www.bhphotovideo.com/c/product/767986-REG/Whirlwind_WHH4NL3_5_WHH4NL3_5_Line_to_Microphone.html)) to connect an audio mixer to my camera. Now, I've tested the cable by connecting my DAP to the camera, and it works just fine. But when I connect the attenuator cable, even without an audio mixer plugged-in, I hear background noise. When I turn on the audio mixer but don't have any input sources for it, the noise is even louder. When I connect a radiomic to the mixer, the loud noise is still there, coupled with the audio from the microphone.

Can someone help me figure out what's going on here? Am I somehow using an attenuator cable incorrectly? I doubt it's faulty considering that connecting a DAP to my camera results in a good, clean signal and no noise on the line.

**Tags:** audio, cable

> **Comments:**
> **username_1**: What is a DAP??  
> **username_1**: did you check if the input volume is somewhere in a decent range? Or is this auto level control? What camera are you talking about?  
> **username_0**: @HansMeiser DAP = digital audio player. There is a level control, I've tried going up and down, the noise is still there. The camera is Sony a7R II.  
> **username_1**: What kind of mixer do you use and did you try to connect it with a regular (non attenuator) cable?  

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## 0 answers

