Results 1 to 6 of 6
  1. #1
    AR Newbie Registered Member
    Join Date
    Nov 2014
    Posts
    1

    why am i getting continuous humming or buzzing in speakers w/ stereo-PC connections

    I have a new Sony amplifier/receiver (model STR-DH130) connected to my PC (Dell). Everything is properly connected. However, when both the amplifier and PC are operating, to get Internet audio on the home audio system. I get a continuous humming to buzzing sound. There are no settings that I can find to adjust to get of the noise. Even the Sony manual says this kind of noise is possible when connecting auxillary equipment (PC) to the Portable jack and that this kind of noise is Normal. What is going on?

  2. #2
    Shostakovich fan Feanor's Avatar
    Join Date
    Jun 2002
    Location
    London, Ontario
    Posts
    8,127
    Quote Originally Posted by Mach1 GTX View Post
    I have a new Sony amplifier/receiver (model STR-DH130) connected to my PC (Dell). Everything is properly connected. However, when both the amplifier and PC are operating, to get Internet audio on the home audio system. I get a continuous humming to buzzing sound. There are no settings that I can find to adjust to get of the noise. Even the Sony manual says this kind of noise is possible when connecting auxillary equipment (PC) to the Portable jack and that this kind of noise is Normal. What is going on?
    It's not normal, on the other hand it's not uncommon. By the sound of it, you are experiencing what is called a "ground loop" which is most often experienced when components, e.g. your receiver and your PC are connected to the same electrical ground. This isn't always easy to get rid of. However try plugging the receiver and PC into different electrical outlets, preferably widely separated from each other. Another approach is called "lifting the ground", i.e. removing the third, ground plug from your AC plug -- but this can be dangerous: most equipment today is designed to be grounding and "lifting the ground" can potentially lead to damage to the equipment.

  3. #3
    Forum Regular harley .guy07's Avatar
    Join Date
    Aug 2009
    Location
    Springfield, Mo
    Posts
    1,594
    I also have a Dell pc as a media server on my system and it also hummed at first and the problem was a ground loop. I would try using a cheater plug that converts the 3 prong plug into a 2 prong without the ground lug on it so that you will not do any permanent damage to any plug so that you can see if the problem is the ground loop. If this works and you are not satisfied with the ground being lifted on the computer then there are ground loop isolator devices available that will keep the computer grounded while eliminating the ground loop problem.

    Marantz SR5008(HT)
    Nu Force P8 Preamp (2 channel)
    Pass Labs X150.5(2 channel)
    Adcom 545 mk2 power amp(rear channel amp)
    Spatial Audio M3 Turbo S Mains Speakers
    Dayton 8" HO custom sealed subwoofer(2 channel)
    Yamaha NS-c444 center channel
    Emotiva ERD-1 surround speakers
    JBL e250p subwoofer highly modified
    Samsung 46" LED TV
    OPPO BDP-83 blue ray/multi format player
    ps-audio NuWave dac (2 channel)
    Dell I660 music server running fidelizer windows 8 audio optimizer
    PS Audio Quintet power center



  4. #4
    Super Moderator Site Moderator JohnMichael's Avatar
    Join Date
    Apr 2005
    Location
    Central Ohio
    Posts
    6,307
    Are you listening to Glenn Gould?
    JohnMichael
    Vinyl Rega Planar 2, Incognito rewire, Deepgroove subplatter, ceramic bearing, Michell Technoweight, Rega 24V motor, TTPSU, FunkFirm Achroplat platter, Michael Lim top and bottom braces, 2 Rega feet and one RDC cones. Grado Sonata, Moon 110 LP phono.
    Digital
    Sony SCD-XA5400ES SACD/cd SID mat, Marantz SA 8001
    Int. Amp Krell S-300i
    Speaker
    Monitor Audio RS6
    Cables
    AQ SPKR and AQ XLR and IC

  5. #5
    Shostakovich fan Feanor's Avatar
    Join Date
    Jun 2002
    Location
    London, Ontario
    Posts
    8,127
    Quote Originally Posted by JohnMichael View Post
    Are you listening to Glenn Gould?
    Heehee! Kind of classical aficionado joke though: above the heads of most folk.

  6. #6
    Super Moderator Site Moderator JohnMichael's Avatar
    Join Date
    Apr 2005
    Location
    Central Ohio
    Posts
    6,307
    Quote Originally Posted by Feanor View Post
    Heehee! Kind of classical aficionado joke though: above the heads of most folk.
    Glad you enjoyed it.
    JohnMichael
    Vinyl Rega Planar 2, Incognito rewire, Deepgroove subplatter, ceramic bearing, Michell Technoweight, Rega 24V motor, TTPSU, FunkFirm Achroplat platter, Michael Lim top and bottom braces, 2 Rega feet and one RDC cones. Grado Sonata, Moon 110 LP phono.
    Digital
    Sony SCD-XA5400ES SACD/cd SID mat, Marantz SA 8001
    Int. Amp Krell S-300i
    Speaker
    Monitor Audio RS6
    Cables
    AQ SPKR and AQ XLR and IC

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •