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Author Topic: Buzzing caused by cables??  (Read 1791 times)

weihfool

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Buzzing caused by cables??
« on: June 15, 2004, 12:45:31 PM »

I have yet another probably ridiculously easy question, but I'm stumped.  

I made some mic cables for myself using Neutrik connectors and Canare quad star.  

I hear a "buzzing" sound when I use them with any of my mics, oddly enough, especially dynamics (sm 57's, e609, RE20, etc.)

Is this a cold solder joint type of problem or something?  I've redone all of my connections multiple times, used them with multiple mics on multiple preamps/consoles, and for some reason, I get this persistent buzz that won't go away.  

Please, help.  I'm completely confused.  Thanks everyone.
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Geoff_T

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Re: Buzzing caused by cables??
« Reply #1 on: June 15, 2004, 02:19:30 PM »

Hi

Could you describe how you connected it... particularly what you did with the overall screen?

Smile
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Geoff Tanner
http://www.auroraaudio.net/main.shtml
http://www.grandmasterrecorders.com
    http://www.amazon.com/gp/reader/0595093329/ref=sib_dp_pt/104 -6861899-0350336#reader-link

NB Please do not pm me if you want a fast response... please email me.

weihfool

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Re: Buzzing caused by cables??
« Reply #2 on: June 15, 2004, 03:01:42 PM »

Hey Geoff,
   Thanks for replying.  I used the 2 white wires as my pin 2 hot, then the two blue wires as my pin 1 as neutral, and pin 3 as my shield/ground, connected on both ends.  

Again, to reiterate, I get a constant buzzing.  This is probably pretty obvious, but none of my preamps are transformer coupled, so it's something having to do with the cable.  Any of the store bought cables I have (proco, monster, etc.) do NOT exhibit this problem.  It's only the cables I made using the Canare QuadStar.  

Thanks again Geoff.
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amorris

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Re: Buzzing caused by cables??
« Reply #3 on: June 15, 2004, 03:58:15 PM »

have you tested the cable with an Ohmmeter? has the wire itself been pinched? try a different piece of wire. then maybe check the wiring of the good cables. maybe you have a bad ground scheme and the good cable has a lifted sheild
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weihfool

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Re: Buzzing caused by cables??
« Reply #4 on: June 15, 2004, 05:18:31 PM »

Hi,
  Thanks for response.  I have checked the cables with an ohmmeter and haven't found any continuity where I shouldn't.  All pins are isolated from each other as far as the individual leads within the cable are concerned.  

As for it being pinched, I can't visually see anything on the outside and the other thing is that I've made 3 different cables and have gotten the same result with all 3.  

I don't doubt it's something I'm doing wrong, I'm just confused as to what it is.  Thanks again for responding.
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Rick Sutton

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Re: Buzzing caused by cables??
« Reply #5 on: June 15, 2004, 08:50:32 PM »

Wiehfool, If I read your post right, you've got pins 1 and 3 mixed up. Pin 1 should be shield/ground, NOT pin 3. Pin 3 should be neutral. Make sure you make the changes on both ends of the cable and your buzzes should go away. Best regards, Rick
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Geoff_T

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Re: Buzzing caused by cables??
« Reply #6 on: June 15, 2004, 10:09:04 PM »

Well spotted!

Smile
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Geoff Tanner
http://www.auroraaudio.net/main.shtml
http://www.grandmasterrecorders.com
    http://www.amazon.com/gp/reader/0595093329/ref=sib_dp_pt/104 -6861899-0350336#reader-link

NB Please do not pm me if you want a fast response... please email me.

weihfool

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Re: Buzzing caused by cables??
« Reply #7 on: June 16, 2004, 02:27:10 PM »

Oh man, Rick, THANK YOU.  I very much appreciate your help!!  

...there I go again, living up to my username...  Rolling Eyes
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