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Subwoofer Noise From AV Yamaha Reciever

Discussion in 'AV Receivers & Amplifiers' started by BiggieBig, Jan 3, 2004.

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  1. BiggieBig

    BiggieBig
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    Hi Was Wondering if any one can help with this problem :-

    I have the following

    Panasonic DMR-E50 DVD Recorder
    Yamaha HTR 5550 AV Reciever
    Celestion AVP305 speakers.

    When I change modes on my amp
    i.e from prologic to stereo.
    prologic to dolby digital

    The subwooder makes a big thumping sound. This happens even when movies are playing and when the amp switches from stereo to dolby digital. Also happens when I press pause or fast forward on the DVD.

    Still present even when I mute the amplifier. But is variable when I turn the volume up\down on the sub. Tired connecting a different sub and I get the same problem, even tried changing the lead.

    Appears to be a sudden surge from the subwoofer out from the amplifer when the amp switches mode.

    Is this normal with this kind of set-up or am I doing something wrong.

    Any help is appreciated.

    Thanks
     
  2. Andywilliams

    Andywilliams
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    Hi Depsi
    Have you been pulling the sub phono out without turning everything off,It seems you have blown the muting transistor in you amp.Dont think its expensive to get it repaired just take it back and say it just started doing it and you will have the repair done under warranty.
    Cheers Gonzo.
     
  3. BiggieBig

    BiggieBig
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    Hi Gonzo



    Thanks for the reply. I haven't really been messing with the leads without turning the equipment, may have done on a couple of occasions.

    Don’t really want to send the equipment back until I’m definite that it’s faulty, as it’s from the web and posting could prove expensive.

    Thanks for the post I will keep the problem in mind.

    Has anybody else experienced similar problems with a Yamaha amp ?.
     
  4. wilber

    wilber
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    Definitiely sounds like the muting transistor has blown (you only need to pull the lead out once to do it!) - had exactly the same problem with a 630 last year.
     
  5. AV Monkey

    AV Monkey
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    Hi guys,
    Hey depsi u probably wont get this reply as i can see these posts r well dated but just incase you do. I have a yamaha dsp-ax620 and i have just connected a sub for the first time and am getting exactly the same thing. Did you ever get this issue resolved?
     

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