Polk RT2000 subwoofer problem

ArcTech
ArcTech Posts: 2
edited January 2011 in Troubleshooting
I have a pair of Polk RT2000 tower speakers that I absolutely love. Unfortunately, recently the powered subwoofer in one of the speakers started making a scratchy static type noise that is most evident at low volume levels (because it is not covered up by music.) The noise is present when the subwoofer is on even with no speaker/signal connections to the speaker. I am concerned there may be an issue in the amp. Does anyone have any ideas? I love the speakers so much that I would love to resolve this issue. Thanks for any assistance.
Post edited by ArcTech on
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  • newrival
    newrival Posts: 2,017
    edited December 2010
    is it truly static-y or is it like a hum?
    In my RT3000p's I had a hum in on sub that was a problem with the built-in amp.
    If it really is scratchy maybe it's some loose connection internally? Also, are there any trim pots on the back? If there are twist them around and see if the static responds to your actions and if it seems related. They could just need cleaning. Also, have you checked all the cables for that side of the signal path? including IC's
    design is where science and art break even.
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  • ArcTech
    ArcTech Posts: 2
    edited December 2010
    It is definitely not a hum, sounds like a static-y bad connection. I adjusted the sub amp gain on the back of the speaker and it makes no difference to the static sound. I'm guessing somethig is up inside the amp. Anyone have any insight? Perhaps I can just buy a replacement amp board...
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  • newrival
    newrival Posts: 2,017
    edited January 2011
    You likely have to send it in to Polk. Give them a call and tell them about your situation, they may have some suggestions or they may tell you to send it to them.

    Have you tried swapping the cables between the left and right cables to see if its actually further up stream in your system?
    design is where science and art break even.
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  • mavericksssrig
    mavericksssrig Posts: 2
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  • mavericksssrig
    mavericksssrig Posts: 2
    edited December 2022
    The photos above go with this comment.
    Hey, I'm a newbie here.
    Just bought a pair of 1997 Polk RT2000P Powered Towers.
    One had its power light out, and the 2 powered subwoofers were dead.
    Missing were the gold jumper plates.
    Pulled the amp and found the 5mm x 20mm T2L 250v fuse blown.
    I really wasn't impressed with the woofers of the working tower, plus I'm running 2 powered room subwoofers, so really didn't need the tower woofers anyway.
    Because I didn't want to wait for replacement fuse, but DID want all tower speakers and woofers playing, I bypassed the amp, and activated the 2 bottom woofers with + and - signal from my Onkyo AVR front B Speaker terminals.
    Tower is operating with all speakers activated, and sounding great. Bottom 2 woofers are woofing because they must be going through their crossovers.
    Study the photos above to see how I have bypassed the amp (no fuse installed, amp not plugged in).
    No wires were cut.
    Only one wire was added, running from the + terminal of the woofer terminal on back of tower, running through the amp vent slot, and "T"-ed into the red wire exiting the amp.
    When fuse arrives, all I need to do is disconnect the added red wire from the + Terminal, install fuse, and plug in the amp.
    For all of you out there with MUCH more technical knowledge than me, please tell me the hazards of running my modded setup long term.
    You will not hurt my feelings.
    All I can come back with is, it's working fine, so far, without its amp.
    Let the flames begin 😃.
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