rb981's Buzzing

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  • JonLeach
    Junior Member
    • Sep 2003
    • 15

    rb981's Buzzing

    hi i wonder if anyone has experienced this problem, its not buzzing through the speakers, but the units themselves are buzzing. i have 2 bought secondhand and were setup as mono, i use them for center, and surround, i have a rb1080 doing stereo and thats fine, previosly i had a 985 mk2 which was also fine.


    if they are used without any connections they still buzz.

    i don't want to get rid of them as they sound very good, i could alwasys build a cupboard for them i suppose


    Jon
  • eelco74
    Senior Member
    • Dec 2002
    • 394

    #2
    Hi,

    I have owned a pair of 981's, and both of them are dead quiet. I stil have one of them for stereo, but no buzzing at all. I live in Europe, and power seems te be less troblesome overhere....

    ave you compared the 1080 to the 981. Is the 1080 mutch better sounding ?




    Marantz AV8802, Marantz UD8002, Rotel RB-991 and RB985mkii, Rotel RD960
    Focal/Jmlab Electra 1028S, Electra CC, Electra SW1000S, Cobalt 705
    Pioneer KRL-37V, Epson EH-TW8100, Kinkping CES-180 77"inch

    Comment

    • JonLeach
      Junior Member
      • Sep 2003
      • 15

      #3
      I am in europe, UK.

      i have dedicated mains so i don't think thats the problem.

      i wonder if attacking the case with blue tac would improve things.

      IMO the 1080 has more detail and a tighter bottom end. you can really pickout every instrument even when the amps are really rocking. my only critism is that you have to crank it up a bit. for some reason i have the speakers sat on the 981's set to -6 after calibration. Weird.

      Comment

      • eelco74
        Senior Member
        • Dec 2002
        • 394

        #4
        oops... I thought you lived in the US :-)

        Have you tried to remove the amps from the rack, and remove the lid.
        Be very carefull because of the electricity. I cannot inmagine where the hum could be coming from, since the amp does not contant that many parts. Normally the transormer can hum, but I can't see this becaulse Rotel uses very high quality ones.

        The 1080 is quite a bit more expensive, so it should sound better....




        Marantz AV8802, Marantz UD8002, Rotel RB-991 and RB985mkii, Rotel RD960
        Focal/Jmlab Electra 1028S, Electra CC, Electra SW1000S, Cobalt 705
        Pioneer KRL-37V, Epson EH-TW8100, Kinkping CES-180 77"inch

        Comment

        • JonLeach
          Junior Member
          • Sep 2003
          • 15

          #5
          yes your right, it should be better.

          watched Alien last night late on, and had to have the volume quite low and all i could hear was the humming from those amps. i will definatly attack them with blue tac this weekend.

          Jon

          Comment

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