Can't kill the humming in my sub..help
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Joined: Aug 2007
Posts: 16
frequent flier
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OP
frequent flier
Joined: Aug 2007
Posts: 16 |
I’m hoping someone out there can help me out with this humming problem. It’s starting to drive me nuts. I have an axiom system with the EP500 sub, I’ve been getting that 60hz buzzing for quite awhile now, it’s to the point that I only plug the thing in when I want to watch an action movie and I know the buzz will be drowned out by everything else. I’ve done some research and tried some things but everything so far has failed. Here’s what I’ve tried. 1) Remove ground screw (worked for a little bit but hum came back) 2) Bypass the ground by plugging the cord into one of those 3 to 2 prong adapters (made it worse) 3) Unplug cable TV from cable box to check for interference…no change 4) Plug into different outlets .. sometimes gives temporary relief 5) Unplug the input cable from sub…this works which makes me think it isn’t my electric..? When I was trying these methods I ran across something really strange…I noticed that when I walk towards the sub the hum gets louder the closer I get. I’m all out of ideas, the sub cable I’m using came from monoprice and I believe it is shielded. I’m willing to try about anything EXCEPT ordering a cable from monster! :P Any ideas?
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Re: Can't kill the humming in my sub..help
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Joined: Sep 2008
Posts: 4,116
connoisseur
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connoisseur
Joined: Sep 2008
Posts: 4,116 |
Hi iammongo,
Can you disconnect the subwoofer from the system all together and with all your other equipement off just plug the subwoofer into an outlet and turn it on (no subwoofer cable attached)? Does it hum, buzz, pop or make any other sounds?
I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.
-Max Payne
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Re: Can't kill the humming in my sub..help
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Joined: Feb 2009
Posts: 3,466
connoisseur
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connoisseur
Joined: Feb 2009
Posts: 3,466 |
His #5 seems to indicate what removing the input from the receiver does indeed stop the hum. So it is a ground loop, just an extra pesky one.
I'd say, while it is humming, start unpluging things from each component, and then components themselves from the wall. When it stops humming note what you just unplugged. You can then try plugging some of the other stuff back in, and see if it does not return. Report back here with your findings for some ideas.
Pioneer PDP-5020FD, Marantz SR6011 Axiom M5HP, VP160HP, QS8 Sony PS4, surround backs -Chris
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Re: Can't kill the humming in my sub..help
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Joined: Aug 2007
Posts: 16
frequent flier
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OP
frequent flier
Joined: Aug 2007
Posts: 16 |
Will do that....thanks for the advice
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Re: Can't kill the humming in my sub..help
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Joined: May 2003
Posts: 18,044
shareholder in the making
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shareholder in the making
Joined: May 2003
Posts: 18,044 |
If it's happening without anything attached to the sub other than power, it's a problem with the amp. Call or email Axiom.
I am the Doctor, and THIS... is my SPOON!
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Re: Can't kill the humming in my sub..help
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Joined: Aug 2007
Posts: 16
frequent flier
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OP
frequent flier
Joined: Aug 2007
Posts: 16 |
nope, with the sub just plugged in there is no noise
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Re: Can't kill the humming in my sub..help
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Joined: Sep 2008
Posts: 4,116
connoisseur
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connoisseur
Joined: Sep 2008
Posts: 4,116 |
Is the subwoofer brand new? How long have you had your entire setup? Have you added any new components or cables to your system? Has the hum always been present?
If you can borrow another sub cable off someone I would also recommend swapping out the Monoprice cable. I have never used a Monoprice sub cable but with other cables I have used from them the build quality can be hit or miss. It is always possible the shielding could be inadequate or the cable defective which is inducing hum. You seemed to have tried everything else.
I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.
-Max Payne
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Re: Can't kill the humming in my sub..help
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Joined: Feb 2007
Posts: 602
aficionado
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aficionado
Joined: Feb 2007
Posts: 602 |
I just bought a ground loop filter from Axiom and my problem went away.
-- Denon 4520, EPIC80/500/VP180 Speakers
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Re: Can't kill the humming in my sub..help
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Joined: Feb 2008
Posts: 44
buff
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buff
Joined: Feb 2008
Posts: 44 |
Could the hum come from a recently installed light dimmer or nearby fluorescent light? Or do you recall this problem starting after getting a new appliance like a refrigerator?
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Re: Can't kill the humming in my sub..help
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Joined: Sep 2008
Posts: 4,116
connoisseur
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connoisseur
Joined: Sep 2008
Posts: 4,116 |
I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.
-Max Payne
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