The Polk Audio site has an active forum with many individuals who could be very helpful for this specific problem. Some I believe are retired Polk factory service technicians.
Polk LSI25 Sub woofer amp Problem...Help!!
Hello Everyone! I recently acquired a nearly mint condition, or so I thought, pair of Polk LSI25s for $600.
Everything worked well for 3 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.
While there are no inputs on the speaker, if I turn the sub woofer on it emits a sound that resembles that off a car muffler 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 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.
Any suggestions?
Everything worked well for 3 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.
While there are no inputs on the speaker, if I turn the sub woofer on it emits a sound that resembles that off a car muffler 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 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.
Any suggestions?
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