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    STEP-UP - PAS

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    Pillo69

    Posts : 105
    Join date : 2012-04-11
    Location : Granada (España)

    STEP-UP - PAS

    Post by Pillo69 on Mon Dec 22, 2014 8:22 pm

    I tried to place a Beyer Dynamic transformers PAS, to use capsules MC on my turntable.
    The result is bad, introduces much noise. This problem is PAS?.

    peterh

    Posts : 679
    Join date : 2012-12-25
    Location : gothenburg, sweden

    Re: STEP-UP - PAS

    Post by peterh on Tue Dec 23, 2014 3:53 am

    Du you mean hum ? In that case hum might be coming from the transformers themself, they will
    pick up any magnetic fields that is present in the house.

    Try to move them around, or put them inside an iron box ( old 2 inch water pipe tubing with endcaps
    of iron is a good material to shield MC transformers.)

    Pillo69

    Posts : 105
    Join date : 2012-04-11
    Location : Granada (España)

    Re: STEP-UP - PAS

    Post by Pillo69 on Tue Dec 23, 2014 11:54 am

    These are isolated by a metal box bought for it.
    I still introduces a nasty buzz.

    peterh

    Posts : 679
    Join date : 2012-12-25
    Location : gothenburg, sweden

    Re: STEP-UP - PAS

    Post by peterh on Tue Dec 23, 2014 12:21 pm

    Pillo69 wrote:These are isolated by a metal box bought for it.
    I still introduces a nasty buzz.
    If they still hums with their inputs shorted there is a problem with them.
    If the hum stops when inputs shorted you might have a ground-loop problem between
    PAS and recordplayer

    Pillo69

    Posts : 105
    Join date : 2012-04-11
    Location : Granada (España)

    Re: STEP-UP - PAS

    Post by Pillo69 on Tue Dec 23, 2014 1:35 pm

    Among the turntable and preamplifier there is good grounding.
    I'll check other options and comment.

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