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Thread: Occasional hum

  1. #191
    Join Date: May 2012

    Location: Toulouse, France

    Posts: 6,793
    I'm Kevin.

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    I have gone for a variation of the 2nd layout to keep the mains cabling relatively simple, and (hopefully) tidy.
    I just need to think about the best way to extend the transformer secondary cables now.
    Should be back up and running by the weekend.
    Kevin

    Too busy enjoying the music....

    European loan coordinator for Graham Slee HiFi system components..

  2. #192
    Join Date: Jun 2014

    Location: Chorley Lancs

    Posts: 16,835
    I'm Steve.

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    Definitely option 2. The first one looks a right old mess.
    I just dropped in, to see what condition my condition was in

    T/T: Inspire Monarch, X200 tonearm, Ortofon Quintet Blue. Phono: Project Tube Box CD: Marantz CD6006 (UK Edition); Amp: Musical Fidelity A5 Integrated.
    Speakers: Zu Omen Def, REL T9i subwoofer. Cables: Atlas Equator interconnects, Atlas Hyper 3.0 speaker cables

    T'other system:
    Echo Dot, Arcam A75 integrated, Monitor Audio R852 MD speakers
    A/V:
    LG 55" OLED, Panasonic Blu Ray, Sony a/v amp, MA Radius speakers, REL T9i sub.


    KICKSTARTER: ENABLING SCAMMERS SINCE 2009

  3. #193
    Join Date: Jan 2009

    Location: Essex

    Posts: 34,448
    I'm openingabottleofwine.

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    I can't see any difference between the two layouts.


    .
    Barry

  4. #194
    Join Date: May 2012

    Location: Toulouse, France

    Posts: 6,793
    I'm Kevin.

    Default

    I had problems with the images not showing.

    Option 2 makes the mains cabling easier/tidier.
    I am just waiting for some parts before I can finish the cabling and fire it back up.

    Hopefully the common mode filter will make a difference to my problem, that and further separation from the mains should mean less interference.
    Kevin

    Too busy enjoying the music....

    European loan coordinator for Graham Slee HiFi system components..

  5. #195
    Join Date: Jun 2014

    Location: Chorley Lancs

    Posts: 16,835
    I'm Steve.

    Default

    Quote Originally Posted by Barry View Post
    I can't see any difference between the two layouts.


    .
    Me neither. Just a lucky guess
    I just dropped in, to see what condition my condition was in

    T/T: Inspire Monarch, X200 tonearm, Ortofon Quintet Blue. Phono: Project Tube Box CD: Marantz CD6006 (UK Edition); Amp: Musical Fidelity A5 Integrated.
    Speakers: Zu Omen Def, REL T9i subwoofer. Cables: Atlas Equator interconnects, Atlas Hyper 3.0 speaker cables

    T'other system:
    Echo Dot, Arcam A75 integrated, Monitor Audio R852 MD speakers
    A/V:
    LG 55" OLED, Panasonic Blu Ray, Sony a/v amp, MA Radius speakers, REL T9i sub.


    KICKSTARTER: ENABLING SCAMMERS SINCE 2009

  6. #196
    Join Date: May 2012

    Location: Toulouse, France

    Posts: 6,793
    I'm Kevin.

    Default

    Quote Originally Posted by Pigmy Pony View Post
    Me neither. Just a lucky guess


    It looks tidy without the mains cabling.
    Kevin

    Too busy enjoying the music....

    European loan coordinator for Graham Slee HiFi system components..

  7. #197
    Join Date: May 2012

    Location: Toulouse, France

    Posts: 6,793
    I'm Kevin.

    Default

    Jobs a good'un.

    Kevin

    Too busy enjoying the music....

    European loan coordinator for Graham Slee HiFi system components..

  8. #198
    Join Date: May 2012

    Location: Toulouse, France

    Posts: 6,793
    I'm Kevin.

    Default

    No hum has been heard, yet.
    I could also swear that it sounds better than it did before, but that may just be my bad aural memory.
    Kevin

    Too busy enjoying the music....

    European loan coordinator for Graham Slee HiFi system components..

  9. #199
    Join Date: May 2012

    Location: Toulouse, France

    Posts: 6,793
    I'm Kevin.

    Default

    The hum came back shortly after my post above.
    I then started to check my mains and saw that there was an issue in the quality of the mains. After months of not using my BB3, I turned it on again today, for the first time in a long time.

    The difference now is that the mains cable feeding the village has been replaced/upgraded.
    This caused more problems, as the local transformer could not handle the increased power delivery.
    Fast forward until a couple of months ago. A new transformer was installed, and we had a date in February where the connection was going to be made.

    Well, that didn’t happen. Until today. A forecast 4 hour power cut, that lasted 5 hours.
    I waited a while before I powered up the BB3, and finally when I did, there is not the slightest hint of occasional hum.

    So basically this thread can be summarised by “Poor power supply causes phono stage hum and there is very little that can be done about it”.

    At least (I hope) I am not far from a happy ending….
    Kevin

    Too busy enjoying the music....

    European loan coordinator for Graham Slee HiFi system components..

  10. #200
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 6,167
    I'm Alan.

    Default

    Hooray, I like happy endings.
    I love Hendrix for so many reasons. He was so much more than just a blues guitarist - he played damn well any kind of guitar he wanted. In fact I'm not sure if he even played the guitar - he played music. - Stevie Ray Vaughan

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