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"Thudding" Subwoofer

Discussion in 'Subwoofers' started by Ian H, Mar 5, 2003.

  1. Ian H

    Ian H
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    I've got an Eltax active subwoofer and recently I've noticed that when a soundtrack reaches a quiet point or a section with lots of dialogue and no need for bass, the subwoofer "thumps". I'm assuming that the circuits are going into 'standby' or something of that nature but whenever they do so, I get one single thud, like somebody tapping a microphone - has anybody heard of that happening with a sub before? If so - is it in need of repair or could it be down to a flaky cable or something?

    Any input gratefully received.
     
  2. Ian H

    Ian H
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    I'll rephrase that last bit then:

    Any USEFUL input gratefully received.
     
  3. EvilMudge

    EvilMudge
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    To stop anyone else doing it:

    Useless advice - get rid of the Eltax and buy something better :D

    Useful advice - I'm guessing it's got an auto on/off circuit inside, which is either poorly designed (sadly a possibility) or is malfunctioning, in which case you could either try to bypass it (not sure if this is possible) or get it repaired.
     
  4. Jase

    Jase
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    Hi

    Does sound like its switching itself into standby. Has it got the option of leaving the power turned on all the time? If so, just leave it on. If not, then I don´t think theres much you can do about it I´m afraid.
     
  5. Lippy

    Lippy
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    I have got the Evolution 5.2 Power towers.....the click you refer to is indeed, in my experience the active subs powering off after a period of inactivity.


    It is a touch annoying but it only seems to happen when the speakers are being driven at lower volume levels - for me later at night so as not to disturb neighbours! It also depends on the film being watched, obviously.

    Hope this helps


    Regards


    Lippy
     
  6. Zig

    Zig
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    If you were to buy a detached house then you could drive the speakers hard thus curing this annoying problem :D
     
  7. Ian H

    Ian H
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    No it hasn't got any real "tweaking" potential, it's a fairly simple sub with a "low pass frequency" setting and a volume setting.
     
  8. Paul Smith

    Paul Smith
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    Hi,
    You could try setting the sub output on the amp as high as possible and just turn the sub's own gain/volume down (this means the sub is receiving a slightly higher signal and may not turn itself off so often).
    Just a thought. :)

    Paul.
     
  9. iwatkins

    iwatkins
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    ^
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    \_________ He speak the truth :D

    I've also got an Eltax sub which auto offs (no thump, just a mild click).

    But I've turned my sub output up to +10db (max) on the amp and turned the volume on the actual sub down a lot.

    This way, the sub only turns off in really quiet films.

    Cheers

    Ian
     
  10. Ian H

    Ian H
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    Thanks for the input folks - I'll try a few of those changes and see how I go.
     

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