Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Speakers went bad after 9 months

I purchased these speakers 9 months ago and I was pretty happy with them. However, they have since developed an intermittent static when plugged in (even when no sounds are being sent to them). It is not the source itself, since I tried other speakers which did not have the static.Seems that the lifetime of this set of speakers is pretty short....