Marantz SR4200, hum

Discussion in 'AV Receivers & Amplifiers' started by mandlebrot, Jan 15, 2002.

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  1. mandlebrot

    mandlebrot
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    Just a quick ? Do all amps emit an humming noise?

    My Marantz SR4200 does and although this is quite low, I was just wondering if this is normal cause I'm new to the seperate's game and have only just purchased mine.

    Cheers in advance.:clown:
     
  2. Reiner

    Reiner
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    IMHO not, unless you turn up the volume more than what's healthy and press you ear against the speaker ...
     
  3. mandlebrot

    mandlebrot
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    No I'm not talking about the speakers, I'm talking about the amp itself.
     
  4. Reiner

    Reiner
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    I see. Not normal either but transformers do sometimes hum. If the noise is however too loud get the unit replaced.
     
  5. mandlebrot

    mandlebrot
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    I think it may only be a bit noticable because its sat on the wooden top of a hollow cupboard and causing a slight vibration which is then being amplified (excuse the pun) through the cupboard. I will try placing it on a rubber mat to see if this stops or reduces the hum.

    Cheers
     
  6. mandlebrot

    mandlebrot
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    I have now place the amp on a rubber mat and it seems to have reduced hum significantly. I now don't hear it at all unless I am very close to amp and have no sound comming from anything else.

    Sorted I hope:)
     
  7. Harj

    Harj
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    May be worth (if not already done) isolating its power supply Ie not sharing it with other equipment on a socket extension.
     

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