Infinity modulus subwoofer


I thought I would plug in my line out on my LCD TV to my Infinity Modulus subwoofer but I forgot to turn off the power to the sub when I plug in cable to the line in on the sub. The sub burbed loudly for a second and then now it is now powering up. I checked the fuse and it is fine. I have also opened up the subwoofer circuit panel at the back and found out that the AC/DC converter is fine. Anything after that is beyond my expertise. Does anyone know what happen? When I plugged in one of the audio connector, I did not plug it in all the way before it make the loud burb. TIA. Tony
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More about infinity modulus subwoofer
  1. Push the driver with your finger. Does it move back easily? If it's really stiff, it's probably blown.
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