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Humming Sub

Discussion in 'Subwoofers' started by HDPete, Feb 4, 2004.

  1. HDPete

    HDPete
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    My sub is humming (electrical sort of hum!)

    It's a Gale 300 10" Active sub. I'm using a single good-ish quality 10m phono lead from my Amp (Yamaha DSP-A592) to a phono input on the back of the sub.

    I've put a magnetic shield device (designed to stop this sort of thing) around the mains cable, but it hasn't made the slightest difference.

    If I remove the phono lead from the sub, the noise stops. So am I right in thinking the Amp or lead is at fault?

    Can anyone suggest a simple test I can do:
    1) to eliminate the cause
    2) without blowing up the sub!

    Many thanks
    Pete.
     
  2. HDPete

    HDPete
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    Additional...

    I want to get this sorted because I'm getting some top end AV equipment, and don't want the sub to be the weakest link.
     
  3. Ian J

    Ian J
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    If you are matching a Gale sub with "top end" AV equipment it is the weakest link whether it hums or not.
     
  4. HDPete

    HDPete
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    I suspected as much!

    It does seem to perform OK, what would people recomend here for an active sub up to about £500?
     
  5. Hawklord

    Hawklord
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  6. Ian J

    Ian J
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    Whatever you can get from the MJ Acoustics range or if you can squeeze a little more from the piggy bank, something like a B&W ASW675 and you will listen with an amazed look on your face.
     
  7. HDPete

    HDPete
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    Forgive my ignorance, but can you really notice a difference between subs?

    I can understand it on normal speakers, but what sort of audible differences can you notice (except no humming of course!)

    Thanks for the advice.
    Pete
     
  8. Ian J

    Ian J
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    There is a tremendous difference between a cheap and expensive sub which is highly audible. The more expensive subs tend to be tighter with less overhang and have far less distortion which on it's own is highly audible.

    Listen to one and you will notice the difference
     
  9. WilliamSmith

    WilliamSmith
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    Dear dslpete,

    Humming normally caused inadequate earthing of the equipment itself.

    You can try to earth the sub and as well your amp simply by connecting a wire from the metal part of your equipment to earth to see if the problem still exist or not.

    Make sure you turn off all your equipment as well unplug them before you do so for your own safety. It won't blow up your equipment however, so don't worry too much about it.

    Regards,
    Will.
     
  10. ShinObiWAN

    ShinObiWAN
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    Find a Paradigm Servo15 or SVS owner on these forums and ask for a demo, your bound to find somebody willing to help out who doesn't live too far away.

    You will be so impressed that you may actually have a heart attack or even p1ss yourself. I almost did the first time I heard the Servo - p1ss myself that is :)

    What you will hear cannot be explained by mere words, like all the great experiences in life, its impossible to quantify.
     

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