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Thread: A frustrating audible hum in my setup, please help!

  1. #1
    Join Date
    Mar 2005
    Location
    Milwaukee, WI
    Posts
    711

    Default A frustrating audible hum in my setup, please help!

    Trying to eliminate a very annoying 120 hz (I think, seems higher than your typical 60 hz hum) buzzing sound coming through my setup. I’ve tried tons of things, new surge protectors, different outlets, hum x, etc. it’s a buzz that come on every 6-8 seconds, buzzes for a few then goes off, never stopping. It does disappear on occasion and other times it’s less pronounced. Its not the amp, ruled that out long ago.

    My setup is very complex.
    Ascend speaks obviously
    Yamaha cx5000 pre
    Parasound amp a21
    Parasound pre p7
    Behringer fbd
    Dual subs Rythmik
    Custom built pc for streaming movies and Jriver music with 200 watt external power supply (hd Plex)
    Schiit dac
    Directv box
    Sony ps3
    Outlaw 7 ch amp for surrounds and zone speakers

    I’ve tried unplugging cables many times and can’t seem to locate the root of the problem.

    Any suggestions on where to begin?
    Thanks.

  2. #2
    Join Date
    Dec 2007
    Location
    Waterloo, Il
    Posts
    17

    Default Re: A frustrating audible hum in my setup, please help!


  3. #3
    Join Date
    Mar 2005
    Location
    Milwaukee, WI
    Posts
    711

    Default Re: A frustrating audible hum in my setup, please help!

    Quote Originally Posted by rjkruk View Post
    Not that I am aware of.

  4. #4
    Join Date
    May 2015
    Location
    Houston, Texas
    Posts
    1,390

    Default Re: A frustrating audible hum in my setup, please help!

    did you try moving the cable box/disconnecting?
    any dimmer switches?

  5. #5
    Join Date
    Feb 2013
    Posts
    191

    Default Re: A frustrating audible hum in my setup, please help!

    Live near any radar or other transmission systems?

  6. #6
    Join Date
    Mar 2005
    Location
    Milwaukee, WI
    Posts
    711

    Default Re: A frustrating audible hum in my setup, please help!

    Quote Originally Posted by racrawford65 View Post
    did you try moving the cable box/disconnecting?
    any dimmer switches?
    Move directv box where?
    There may be a dimmer on that circuit, I’ll check.

  7. #7
    Join Date
    Mar 2005
    Location
    Milwaukee, WI
    Posts
    711

    Default Re: A frustrating audible hum in my setup, please help!

    Quote Originally Posted by jimb View Post
    Live near any radar or other transmission systems?

    Nope, pretty rural by me.

  8. #8
    Join Date
    May 2015
    Location
    Houston, Texas
    Posts
    1,390

    Default Re: A frustrating audible hum in my setup, please help!

    Quote Originally Posted by merrymaid520 View Post
    Move directv box where?
    There may be a dimmer on that circuit, I’ll check.
    cable box - disconnect from your system entirely and away from other components. I've seen on other forums (don't recall which) that in some cases cable boxes were the source of noise.

  9. #9
    Join Date
    Mar 2005
    Location
    Milwaukee, WI
    Posts
    711

    Default Re: A frustrating audible hum in my setup, please help!

    Quote Originally Posted by racrawford65 View Post
    cable box - disconnect from your system entirely and away from other components. I've seen on other forums (don't recall which) that in some cases cable boxes were the source of noise.
    Well I unplugged the satellite feed (rg6 cable) coming into the directv box and unplugged it’s power source and nothing changed. I also confirmed the outlet that all my equipment is plugged into is a dedicated one with nothing else on it. Still that darn hum/buzz.

  10. #10
    Join Date
    Dec 2007
    Location
    Waterloo, Il
    Posts
    17

    Default Re: A frustrating audible hum in my setup, please help!

    Did this just start recently and have you added any new electric / electronics lately?
    Your or neighbors put in any electric fence? Power and signal cables for audio separated?
    I would check with your electric company and ask if they have made any changes.

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