LSi25 Hum and low freq rumble

I have a pair of LSi25’s and am having the following issues with the left speaker:
1. Low level Hum, independent of input or connections.
2. Sub woofer intermittent low frequency rumble independent of input or connections.
Does Polk perform repairs or can you recommend a good service? Can I just replace the board? Please advise

Answers

  • mlistens03mlistens03 Posts: 2,374
    jrf wrote: »
    I have a pair of LSi25’s and am having the following issues with the left speaker:
    1. Low level Hum, independent of input or connections.
    2. Sub woofer intermittent low frequency rumble independent of input or connections.
    Does Polk perform repairs or can you recommend a good service? Can I just replace the board? Please advise

    The LSi25s are no longer in production, so you can’t replace the board with a new one. If you have electrical knowledge then I would suggest that you open it up and inspect the board (probably the pre amp section is the culprit). Be sure to take pics while you are in there, because some of us have electrical knowhow (I’m not the best by a long shot) and we may be able to help.
    Micah

    Main system: Technics SL3200, Shure M97xE, Lafayette LR1100 for tuner, Hagerman Audio Labs Bugle 2 phono stage, NAD C352 integrated, Boston Acoustics VR 2, Boston PV500, generic ICs, and BJC Belden speaker cables.

    Desktop: Dell Precision 690 running iTunes, Yamaha RX-v665, Monitor Audio R90s, Velodyne VA-907, generic ICs and speaker cables.
    I've always thought the goal of high-end audio was not to have your neighbors bang on the wall and say, 'Turn that darn music down' but to have your neighbors bang on the wall and say, 'Tell your friends to go home and you can practice later this week'.
  • KennethSwaugerKennethSwauger Moderator Posts: 6,765
    Hello,
    I would contact Polk at: 1-800-377-7655 select option 1 for assistance.
    "And the house you live in will never fall down
    If you pity the stranger who stands at your gate" G.Lightfoot
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