Polk LSI25 Sub woofer or possible amp issues, any takers? HELP!!! I love these speakers.

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Hello Everyone! I recently acquired a nearly mint condition, or so I thought, pair of Polk LSI25s.

Everything worked well for 6 months, until today the Sub woofer on the right side started playing at what I think is max volume while listening to some jazz at a moderately low volume. So of course i thought this can't be good and turned off my amplifier.

While there are no inputs on the speaker, if I turn the sub woofer on it emits a sound that resembles that off a...hard to describe...a Sub woofer car muffler pulse... at a relatively low volume. Changing the volume knob seems to have no effect, but sometimes pressing on it can make the sound louder, or stop.

It will still pass through music when connected, but only at what seems to be max volume. (I only tested this once, because I don't want to blow the woofer)

The passive end of the speakers work perfectly fine.

I live in Oklahoma and there aren't really any speaker repair shops near me. I'm quite savvy with computers and have taken the back plate off but don't see any type of burning issues or anything that looks out of place.

HELP!! I love these speakers!!

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  • F1nut
    F1nut Posts: 49,801
    edited February 2018
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    Sounds like the amp bit the dust. Call Polk to see about a replacement.
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