Why Is My Polk Audio Amr130 Popping?

So My Windows 7 Computer Has No Speakers Then My Dad Gave Me His Old Speakers And They Still Work But They Were Popping But I Found A Date On The Speaker And I Don't Know What Is Means And It Says (11/2001) So Then In 2019 It Popped And Then I Played A Song And It Popped And Turned Off Someone Help Me Please :( Comments That Are Not Helpful Will Be Deleted