RT15i woofer problem

petesbween
petesbween Posts: 1
edited January 2011 in 2 Channel Audio
Hi folks, I am new to the forum -- there sure is a lot of great info here!

I just received a pair of RT15is i bought online (used). One of the woofers makes a crackling, scratchy sound with even low amounts of amplification. The box was not damaged in shipping and externally the woofer looks fine. I checked the speaker connections and swapped the speakers and it is definitely in the box. I am a novice with this sort of thing... could a connection be loose behind the woofer or is this indicative of a more serious problem? Any advice is most welcomed. :confused: