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Low hum in headphones from mixer
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Bob Stevens
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Joined: 27 Dec 2012
Posts: 151
Location: Orange County, California

PostPosted: Thu Aug 01, 2013 10:19 am    Post subject: Reply with quote

Try a ground lift.
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Jeffrey Kafer
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Joined: 09 Dec 2006
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PostPosted: Thu Aug 01, 2013 10:36 am    Post subject: Reply with quote

Don, the problem happens when only the power is plugged in and the headphones. Nothing else is plugged in and the pots are all the way to the left. The noise doesn't rise or fall with the headphone control. Even all the way off, it still makes the noise.

I don't know what pictures you saw of my house, but it's only 8 years old.
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heyguido
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Joined: 31 Aug 2011
Posts: 2507
Location: RDU, the Geek Capitol of the South

PostPosted: Thu Aug 01, 2013 11:04 am    Post subject: Reply with quote

No dis of your home. All I've really seen of your house is your closet pics and one in which you purported to be hiding the fact that you had been playing vid games when your wife walked in from work..... Wink Mine is 21 years old, and has plenty of its own issues. (My house, not my wife)

From what you describe, the issue is probably not grounding, then....

At this point, I'd guess either a dried out capacitor in the headphone amp, or a poor solder joint in the headphone jack.

Either way, you have a noticeable hum that's likely to nag you every day you use the rig. Granted, it's not in the program bus, but.....

I'd contact the seller.
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Don Brookshire
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Jeffrey Kafer
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PostPosted: Thu Aug 01, 2013 11:53 am    Post subject: Reply with quote

Seller has been contacted. Though from other posting here, this seems to be a common problem.

Could I just use the control room outs?
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cyclometh
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Joined: 06 Aug 2010
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Location: Olympia, WA

PostPosted: Thu Aug 01, 2013 11:57 am    Post subject: Reply with quote

Next time I'm up north we should arrange to get together, Jeff- maybe I could help you get things set up. I can't do anything about the headphone hum, sadly.
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Corey "Vox Man" Snow
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Jason Huggins
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PostPosted: Thu Aug 01, 2013 12:09 pm    Post subject: Reply with quote

Since I have the exact same hum (I'm guessing), I popped the back off and resoldered the headphone jack. It didn't change anything. Probably an issue with the headphone amp, as Don said. For me, the hum is barely audible, and I don't even hear it when I am listening to audio. BUT, if it'll bug YOU, there is no reason to just deal with it.
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Jeffrey Kafer
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PostPosted: Thu Aug 01, 2013 12:41 pm    Post subject: Reply with quote

The best the seller is willing to do is take the unit back and refund my money, but I have to pay the $20 to ship it back.

Net result being that I would be in the hole for $20 with no mixer to show for it. Seems easier to ignore the problem and leave negative feedback. Smile
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Lee Gordon
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Joined: 25 Jul 2008
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Location: West Hartford, CT

PostPosted: Thu Aug 01, 2013 1:16 pm    Post subject: Reply with quote

I wouldn't even bother with the negative feedback. It's not going to do anything for you.
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heyguido
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Joined: 31 Aug 2011
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PostPosted: Thu Aug 01, 2013 2:01 pm    Post subject: Reply with quote

No, but it will tell others what it's like to deal with the seller. Inoccent
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Don Brookshire
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Ed Fisher
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Joined: 05 Sep 2012
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PostPosted: Thu Aug 01, 2013 3:34 pm    Post subject: Reply with quote

You leave him negative feedback.

He leaves you negative feedback.

The Ebay "feedback" process is basically a Joke...IMHO.

I love it when the seller says in their item description "as soon as you leave me positive feedback...I'll give YOU positive feedback." I mean really? When I paid by Paypal and they have the money in their account INSTANTLY?

It makes you wonder how you could possible be a better buyer.

But ...oh well.
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Jeffrey Kafer
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PostPosted: Thu Aug 01, 2013 5:27 pm    Post subject: Reply with quote

Seller refunded me the $20 in shipping he would've paid to return the item. So $20 off a mixer and I can deal with the buzz. Not going to sling mud in feedback.

Tech question: If I get the correct adapters, can I just use my headphones with the control room outs?
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Ed Fisher
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Joined: 05 Sep 2012
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Location: East Coast, U.S.A.

PostPosted: Thu Aug 01, 2013 6:47 pm    Post subject: Reply with quote

To power headphones, you might consider that 20 bucks you just saved as a down payment on a decent headphone amp. There seem to be plenty of them out there. Some starting as low as $20. (I have no specific recommendations.)

Then you should get the clean in-ear audio that you so desperately need.
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Jeffrey Kafer
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PostPosted: Thu Aug 01, 2013 7:53 pm    Post subject: Reply with quote

Clutter Ash wrote:
To power headphones, you might consider that 20 bucks you just saved as a down payment on a decent headphone amp.


You just solved my problem. I have a crappy little Behringer mixer that I couldn't use as a mixer because the preamps were noisy. However, patching the main out from Mackie into the line ins on the Behringer and then headphones from there solved the hum. I made it a glorified headphone amp.

Hooray for Team VO-BB!
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