just go get them replaced.
odds are something failed inside them.
Ok. I have a 3D Power Woofer LS550 that came with 2 speakers for it and the wire to plug in the computer. I went to plug in the speakers and pluged in the cord to the outlit and it worked, it was playing with bass and all. I then went to plug in the other set that came with it, and when i plugged in the other set. The power woofer box started to fade and then just went off. Now everytime i plug it into the outlet, it wont receive no power, and acting like it doesn't receive any power at all.
the 2 things i think is wrong with it is:
1.) When i put the speakers in, the speakers where the wrong kind of speakers for it and put to much power onto the hard drive making it fry.
2.) The plugin outlit that i plugged the speakers in could of caused a shortage into the wiring to the outlit, but i done took out the wires and all, nothing wrong.
It's either: I fried up the hard drive due to requiring to much power for the other speakers that didn't belong in it, or i knocked out some wiring in it. Any way to fix it?
My friends dad said I blew the subwoofer, but i couldn't have, cause it didn't make a POP sound. I could just replace the motherboard in it.
Look insde the Subwoofer. and it did Blew. U'd See it. If it isent Blow'n up go n Replace them as @xX-RISE-Xx said.