Buzzing/noise from speakers

gte697h
gte697h Posts: 27
edited June 2008 in Troubleshooting
Hi! I have an Onkyo 705 receiver and just bought polk fronts and a center (3.0 setup) to start things off with. The center is a CS1 and the fronts are monitor 40's.

The sound was phenomenal for the first day but now there is a noise/hum from the speakers even when nothing is playing?!!

I can't figure out if its the receiver or the speakers. :confused:
Post edited by gte697h on

Comments

  • deep bass
    deep bass Posts: 86
    edited June 2008
    The 60hz hum is probably coming from the power supply. I think Radio might sell a ground loop that removes that hum you are talking about.


    It could be possible that your + and - are wrong. Sometimes if you reverse them it removes that hum as well

    I'm no expert so correct me if i am wrong.
  • jon s
    jon s Posts: 905
    edited June 2008
    disconnect everything except your speakers... see if the hum is present.. start adding your components to your receiver and see if the hum comes back. that will determine the cause of the hum...
  • F1nut
    F1nut Posts: 50,557
    edited June 2008
    Do you have a cable box hooked up?
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


    President of Club Polk

  • gte697h
    gte697h Posts: 27
    edited June 2008
    F1nut wrote: »
    Do you have a cable box hooked up?

    Nope, just a PS3 to the HDMI in. I'll try hooking up the VCR and see if it produces a hum.
  • gte697h
    gte697h Posts: 27
    edited June 2008
    jon s wrote: »
    disconnect everything except your speakers... see if the hum is present.. start adding your components to your receiver and see if the hum comes back. that will determine the cause of the hum...

    When I disconnected my PS3 from the receiver the hum stopped - but was that because "no signal" was present and the receiver wasn't outputting anything - or was the PS3 the problem? I am going to try connecting my old DVD player and check the results.
  • gte697h
    gte697h Posts: 27
    edited June 2008
    deep bass wrote: »
    The 60hz hum is probably coming from the power supply. I think Radio might sell a ground loop that removes that hum you are talking about.


    It could be possible that your + and - are wrong. Sometimes if you reverse them it removes that hum as well

    I'm no expert so correct me if i am wrong.

    Heya, it could be the ground loop. It seems odd since the PS3 and the TV are the only thing connected to the receiver and all components are plugged into the same power strip.

    I also added my old DVD player to the receiver and there was no hum...so it is the PS3. Is the ground loop breaker from Radio the best bet?
  • gte697h
    gte697h Posts: 27
    edited June 2008
    deep bass wrote: »
    The 60hz hum is probably coming from the power supply. I think Radio might sell a ground loop that removes that hum you are talking about.


    It could be possible that your + and - are wrong. Sometimes if you reverse them it removes that hum as well

    I'm no expert so correct me if i am wrong.

    I think its the ground loop. Is this what I need to get rid of it:
    http://www.radioshack.com/product/index.jsp?productId=2062214&cp=&sr=1&origkw=ground+loop&kw=ground+loop&parentPage=search