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Thread: Anybody with Magnum MF250 amp?

  1. #1
    Join Date: Jan 2014

    Location: Italy

    Posts: 57
    I'm Daniele.

    Default Anybody with Magnum MF250 amp?

    Hi, got it today and sounds very very musical but... Is it normal left channel cooling radiator stays cold while right one naturally warm? It seems dual mono so temp should be the same, right? If left channel has issues at mosfet there should be no music I guess. Thanxs
    UBIK listen with: Primare dac, densen pre, class A amp, Jordan eikona

  2. #2
    Join Date: Jan 2014

    Location: Italy

    Posts: 57
    I'm Daniele.

    Default

    After two hrs of music it has a bit of temperature.. Maybe the bias need reset?
    UBIK listen with: Primare dac, densen pre, class A amp, Jordan eikona

  3. #3
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 6,881
    I'm Lawrence.

    Default

    Yes sounds like bias settings to me, best get it looked at if one side is getting hot. Unless it's class A then you want to get the cool side looked at

    Sent from my BLN-L21 using Tapatalk

  4. #4
    Join Date: Jan 2014

    Location: Italy

    Posts: 57
    I'm Daniele.

    Default

    Thanxs Lawrence.
    UBIK listen with: Primare dac, densen pre, class A amp, Jordan eikona

  5. #5
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 6,089
    I'm Alan.

    Default

    Could be that the majority of transistors are mounted on one side?
    Have you looked under the hood?

  6. #6
    Join Date: Jan 2014

    Location: Italy

    Posts: 57
    I'm Daniele.

    Default

    It's exactly simmetrycal.will be at the lab this Monday for a full sanity check.. Thanxs you responded
    UBIK listen with: Primare dac, densen pre, class A amp, Jordan eikona

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