Title: Worked great, until it died.
Product review: I was very happy with the quality of sound from this sub-woofer. However, recently it stopped working and only emits a high-pitched buzz, with or without input. Online investigation reveals that lots of people find this speaker self-destructs after three years. I live in an apartment building so I definitely did not stress it at all. Certainly won't buy this make next time. Very disappointing.
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