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Thread: Buzzzzz problem

  1. #1
    Join Date: Jan 2008

    Location: Forest of Dean, Glos & Cambrian mountains, Wales

    Posts: 8,616
    I'm Jerry.

    Default Buzzzzz problem

    I recently sold my Bel Canto PRe3 preamp to a nice seeming guy.

    All was well until this morning when I got this message ....

    I've swapped around some leads this morning, so that, for the first time I'm using the balanced input, which is working fine. As was the phono input when I used it before. The sound is fine. The problem that I'm now having is, with the xlr's connected, when I try to connect any of the phono ins, I'm getting a very loud buzzing on all of them. I've tried selecting the appropriate input on the display, and using various sources, but without anything affecting the resultant buzzing sound.

    It worked fine for me.
    Suggestions anyone? (I suspect a grounding issue in his system somewhere).

    Ta.

    Here's a pic of the rear connectivity ...

    Jerry

    Main systems:
    Spotify Premium streaming, Cambridge Audio 851D DAC, Pure Sound L10 pre, Pass X150 power amp. Speakers: MBL 116F. Cryo Silver i/c & Western Electric 16GA spkr cables. ProJect and Nordost Magus power cables

    Headphones: Fostex T50RP mk3, AKG 551, B&O H6, PSB M4U-1, B&O Form 2 & 2a and Sony XBA-H1 & SoundMagic E50 IEM headphones

    2nd system: Spotify Premium streaming / Pioneer DV-535, Audiolab MDAC, Black Cat power amp, Chario Syntar 100T speakers. Headphones: Fostex T50RP mk3, SoundMagic E10 IEM headphones

    3rd system: Portable CD player, Kinter MA-180 T amp, Klegg Symphony 102 speakers

  2. #2
    Join Date: May 2012

    Location: Dagenham Essex

    Posts: 6,924
    I'm I'mteachingmarcotheartofpishanto.

    Default

    Is he trying to connect with things powered up That causes loud buzzing
    Music , fills the gaps between silence !

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  3. #3
    Join Date: Jan 2009

    Location: Essex

    Posts: 15,639
    I'm openingabottleofwine.

    Default

    Without doubt it's a grounding problem. I suspect there might be a ground loop formed with the now-used XLR input and the RCA inputs (and possibly with the mains earth connection). Would need to know the exact configuration of the system to be able to advise further.
    Have you listened to this month's choice in the Album Club?

    Barry

  4. #4
    Join Date: Oct 2016

    Location: Bolton, England

    Posts: 612
    I'm Andrew.

    Default

    He needs to give a much more detailed description of the problem to identify a likely cause.

  5. #5
    Join Date: Jan 2008

    Location: Forest of Dean, Glos & Cambrian mountains, Wales

    Posts: 8,616
    I'm Jerry.

    Default

    Thanks folks.

    I don't think he is an AOS member, but I have sent him a link to this thread.
    Maybe he will join in with some more info.
    Jerry

    Main systems:
    Spotify Premium streaming, Cambridge Audio 851D DAC, Pure Sound L10 pre, Pass X150 power amp. Speakers: MBL 116F. Cryo Silver i/c & Western Electric 16GA spkr cables. ProJect and Nordost Magus power cables

    Headphones: Fostex T50RP mk3, AKG 551, B&O H6, PSB M4U-1, B&O Form 2 & 2a and Sony XBA-H1 & SoundMagic E50 IEM headphones

    2nd system: Spotify Premium streaming / Pioneer DV-535, Audiolab MDAC, Black Cat power amp, Chario Syntar 100T speakers. Headphones: Fostex T50RP mk3, SoundMagic E10 IEM headphones

    3rd system: Portable CD player, Kinter MA-180 T amp, Klegg Symphony 102 speakers

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