My sub woofer will not work it used to i dont think its blown because it would work sometimes and just cut out but now it doesnt work at all?

Is it receiving power? If not that is your answer - could be a blown fuse, bad wire, bad connection, etc.

If power is there and it still does not work then the problem coud be with a bad sub woofer on/off switch, internal fuse, or worse, blown amp from over driving.

if the wires are connected then you ether have a blown amp or sub. try hooking up a diff speaker to the wires if it works your sub is blown. if it doesnt your amp is blown

This previous diagnostic, isn't good, if you test and no continuity between the positive and negative terminals generally means a blown sub.

You won't always get scratching or distortion from a blown sub. Sometimes the voice coil just overheats and burns out like a fuse. In this case there will be no sound at all from the sub, because no power can flow through the voice coil. A continuity test between the positive and negative terminals will show no connection.

Hope this helps.

disconnect it from the amp and use a digital mutimeter and check the resistance, if it's a 4 ohm sub your reading should be close to that number, if the resistance number is below 1 ohm, your sub is probibly blown

yes, you can splice the cables and put on a new connector, goto radio shack with the old connector and im sure they will have one you can splice right onto it. ive done this many times with varios equipment "headphones speakers etc" it may take a couple of tries to get the wiring right but if its just one speaker there will most likely be just 2 wires, if you wire it up and it doesnt quite sound right, wire it the other way. speakers will work wired backwards but wont sound quit right so if it doesnt, rewire it and it should. good luck and i hope this helps!

if the impedance of the new speaker matches the impedance of the old one then i dont see why it wont work

bad connection. try hooking up a different test speaker to your amp. if it works you can trace the short into your sub. if not the terminals in your amp may need to be re-soldered.

Check you have plugged them into the correct socket on the back of the PC ..

Chances are you have 3 sockets - first = 'front' (or pair), middle = 'back' (for 4+ speaker sets) and last = 'center & sub-woofer' ..

Sounds like you have plugged into the 'center & sub-woofer' socket :-)

Different sound system use different voltages for their speakers. Look up in your computer manual what the electricial requirments are for the speakers and see if the one you bought matches.

well if you hear a rattle sound its probably already blown...and the amp could be drawing too much power if the radio shuts off...make sure all your wiring is correct. also if your car is off and you turn it up it will most likely shut off cause the battery cant handle it. but as for the sub i think its blown. good luck