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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.
Check that all wires are making good connections. Unplug them all and then replug them. Worst case scenario, could be a bad output transistor or other internal electronic component.
Check to see who the manufacturer is. The Acoustic Research name was sold a couple of times. I think yours may be Recoton. If so, you may be able to get some help from them.
If this is a powered sub then it's most likely the internal amp inside it that has failed. It's more than likely the part that works the hardest on the board. IE the main amp semicoductor.
That will be step 1 to what will probolly become quiet a bit of problems. I'm not huge on this unit but generally speaking if you opened the chassis your going to see a few burnt components (rectifier,diodes,transistors). But lucky 220 hits so hard it's usually just a replace the stuff you see burnt (get schematic if possible) it's a pretty straight forward repair.
I have 2 12" kenwood speakers on a 1000 watt amp ... the other day they cut off but the speakers arent blown, i replaced every fuse in the amp and the amp still cuts on when i turn the car on, yet the amp seems to not be pushing the speakers ...i also looked at the main fuse under the hood of my car but i cant tell whether its blown or not, why is my amp not pushing out any power?
Since Acoustic Research went out
of business, I too have been looking for a solution similar to yours. I may have found
an alternative to throwing away this really nice speaker. I found a
company on the web that appears to sell an amp that may fit nicely into
this speaker enclosure for $99.00. Check it out...
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