 Dreaded 60 cycle hum
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Joined: Feb 2009
Posts: 1,181 Likes: 1
connoisseur
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OP
connoisseur
Joined: Feb 2009
Posts: 1,181 Likes: 1 |
All,
I have been enjoying my new Axiom setup for close to a month now. My setup has been isolated so far in that I have only my PS3 and DVD player hooked up to it - I have only been watching movies/listening to music from disc or playing games.
Tonight I decided to try some regular TV so moved my HD-PVR to the Axiom setup and plugged it in. I immediately had to shut everything off as I got a very audible 60 cycle hum through the system. I have figured out that it is coming from the coaxial cable itself. As soon as I touch the coax cable to the filtered cable input on my power bar/filter the hum can be heard.
Here's my setup:
- AVR, TV, PS3 and DVD player share a dedicated circuit
- all above are plugged into an APC power bar/filter
- sub is plugged into wall on a separate non-dedicated circuit
I have tried the coax going direct to the PVR and through the APC power supply, both cause the hum equally.
I hope to clear it up this weekend, so any help would be appreciated!
Thanks in advance.
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 Re: Dreaded 60 cycle hum
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Joined: Oct 2006
Posts: 280
local
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local
Joined: Oct 2006
Posts: 280 |
You may want to get this, though probably will not be able to get it by this weekend.
Last edited by ihifi; 04/24/09 12:19 AM.
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Re: Dreaded 60 cycle hum
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Joined: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
Posts: 6,833 |
That's what I bought when the new plasma was humming away, it worked great. Highly recommended!
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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Re: Dreaded 60 cycle hum
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Joined: Feb 2009
Posts: 1,181 Likes: 1
connoisseur
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OP
connoisseur
Joined: Feb 2009
Posts: 1,181 Likes: 1 |
I didn't realize this was such a common problem as it's the 1st time I've ever experienced it. Guess I've been lucky. Thanks for pointing me to a solution. Out of curiosity and cheapness  , is there anything I can do with my existing wiring/grounding to resolve this? I have my cable signal split to feed my small upstairs system and the Axiom HT in the basement. I do not experience this hum upstairs.
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Re: Dreaded 60 cycle hum
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Joined: Feb 2009
Posts: 1,181 Likes: 1
connoisseur
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OP
connoisseur
Joined: Feb 2009
Posts: 1,181 Likes: 1 |
Update - after doing some research on what causes the hum I played with my wiring and was able to eliminate it. I was able to use a pre-existing coax ground block and wire it straight to the main ground wire for the house so the cable and HT share the common household ground. Yay - I can watch the F1 from Bahrain in high def and surround this weekend! 
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Re: Dreaded 60 cycle hum
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Joined: Dec 2003
Posts: 10,420
shareholder in the making
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shareholder in the making
Joined: Dec 2003
Posts: 10,420 |
I was able to use a pre-existing coax ground block and wire it straight to the main ground wire for the house so the cable and HT share the common household ground.
If I am not mistaken, that is the way it is supposed to be hooked up any way.
Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70
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