New MS 909W replacing 309W - humming

Discussion in 'Subwoofers' started by gallium, Nov 6, 2005.

  1. gallium

    gallium
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    I've just replaced my 309W sub with a 909W to get a bit of extra oomph with my Avant 900 setup. Unfortunately I get a loud humming noise from the unit when its connected to the amp, irrespective of whether the notch filter is on or off.

    The 909W is connected to the same power point, with the same sub cable as the 309W which had no humming at all. Hence there should be no issues with the Amp, leads etc.

    Do you think its a faulty Sub?

    Tons, is MS aware of humming issues with the 909s?
     
  2. Leaat23

    Leaat23
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    If your using the same cables ETC(check the cables for any fractures) then it sounds like there could be a fault in the power supply section, dc power not being smoothed correctly, hence the humm. Get a replacement sub.
     
  3. WarLock

    WarLock
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    I don't know if it helps but..

    My REL SUB has a setting for earth, sometimes i mess with the position of the sub (allways looking for the right spot) and i have two diffrent wall power sockets in one i have to turn it on, in the other i turn this setting off, if i don't i get the loud hum.

    sorry for the bad english :(
     
  4. Beobloke

    Beobloke
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    Sounds like a duffer I'm afraid.
    Best to take it back to where you bought it and look sad.......
     
  5. AndyH38

    AndyH38
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    You selling the 309?
     

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