Creative Communities of the World Forums

The peer to peer support community for media production professionals.

Forums Audio Engineering 1/8″ cable noise

  • 1/8″ cable noise

  • David Sikes

    May 20, 2020 at 6:29 pm

    We are implementing a Blackmagic ATEM Mini Pro switcher into some of our work right now. Everything has been meeting our needs with one significant weak link: the 1/8″ audio input. I’m usually getting a line level from the house audio over XLR that I run into an audio recorder to handle the conversion to get it into the ATEM. Every step of it sounds great, including in the audio recorder – except for that final connection to the ATEM. When I plug into that, I hear a lot of interference on the ATEM side. Is there any way to prevent this or fix this when dealing with 1/8″ cable? Are different cables better and shielding the signal than others? Thanks for any advice you can give!

  • Ty Ford

    May 21, 2020 at 1:09 am

    Hello David and thanks for stopping by the Cow Audio Forum.

    Yes different cables can make a difference.

    Is this an unbalanced or balanced input?

    Is this a mono or stereo feed?

    Thanks,

    Ty Ford
    Cow Audio Forum Leader

    Want better production audio?: Ty Ford\’s Audio Bootcamp Field Guide
    Ty Ford Blog: Ty Ford\’s Blog

  • David Sikes

    May 21, 2020 at 6:20 pm

    Thank you for the response! The ATEM Mini Pro input is an unbalanced input. I believe it’s a stereo feed, but I could be mistaken.

  • Ty Ford

    May 21, 2020 at 6:59 pm

    Hello David,

    I called BMD phone support here in the USA. (408) 954,0500, btw.

    The two jacks of the ATM Mini Pro are labeled “mic”, which leaves a lot to the imagination.

    1/8″ connectors may be wired for mono or stereo, balanced or unbalanced.

    According to Tony, they are unbalanced stereo line level, inputs. Probably -10, consumer line level.

    AHA! Tony says the jacks can be set by software. You can set the inputs independently for -55 mic or -15 consumer line.

    So I think you just have a plumbing problem.

    Tony says try the following link for support at BMD: Look for Tony or Gary

    https://forum.blackmagicdesign.com/viewforum.php?f=4&sid=463c18c0df32fb3dae4b01636e3e0169

    Regards,

    Ty Ford
    Cow Audio Forum Leader

    Want better production audio?: Ty Ford\’s Audio Bootcamp Field Guide
    Ty Ford Blog: Ty Ford\’s Blog

  • David Sikes

    May 22, 2020 at 1:13 pm

    Thank you so much for that information! When you say “plumbing problem” – do you mean the cables themselves? What should I look for when getting cables?

    Thanks again.

  • Ty Ford

    May 22, 2020 at 1:22 pm

    Hi David,

    Plumbing Problem: That’s when the wiring of the plugs and jacks is incompatible, e. g. A mono balanced plug going into a stereo unbalanced jack, or an unbalanced stereo TRS going into a jack that only wants to see a mono balanced TRS.

    Tony said the jacks were stereo unbalanced. I have no clue how you’re supposed to feed a mono source into that except perhaps with a plug wired as a TS that’ll feed BOTH of your stereo input channels.

    Regards,

    Ty Ford
    Cow Audio Forum Leader

    Want better production audio?: Ty Ford\’s Audio Bootcamp Field Guide
    Ty Ford Blog: Ty Ford\’s Blog

  • David Sikes

    May 22, 2020 at 3:43 pm

    Got it. This gets me a lot closer to figuring out a solution. Thanks so much!

  • Aaron Robinson

    November 12, 2020 at 1:44 am

    David, did you ever find a solution?? I have the same trouble with all mini’s and I’d love to get an un-filtered clean signal. Wondering if I should return to the ATEM HD.

  • David Sikes

    December 3, 2020 at 3:29 pm

    Unfortunately my best solution has been to run audio to cameras and use the HDMI audio instead of the 1/8″. Seems like it’s easier to avoid ‘plumbing problems’ as Ty mentioned earlier. Working with different sound boards (and sound people) and with my clear deficit of solid audio knowledge, getting a simple XLR line out into one of my cameras has been a pretty easy solution with less issues instead of fussing with converting to 1/8″ for the ATEM.

  • Paul Siegenthal

    January 1, 2021 at 4:00 pm

    I had the same problems.
    – connecting the mic through dbx 286s directly to OBS: sound is perfect.
    – connecting the mic through dbx 286s via the ATEM Mic 1 jack: high noise floor, unusable audio.

    First I guessed that the bad guy was the cable. That is what Blackmagic is saying. I tried out all sorts of cables: no improvement.
    The problem seemed to be in the ATEM mini itself (low-quality preamps) at first.

    Then I connected my Rode Link to the Atem Mic Jack and no problems at all.

    I am baffled.

     

Viewing 1 - 10 of 10 posts

Log in to reply.

We use anonymous cookies to give you the best experience we can.
Our Privacy policy | GDPR Policy