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I have a Niles SW300 subwoofer that continues to blow fuses. I have replaced the fuse, but when it the power is plugged back in the fuse immediately blows.

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Ok, temporary cheap fix... (i mean in a ******* engineering kinda way ;-) . . . )
since your primary receiver has a sub-out RCA plug, you can hop into the local pawn shop, buy a cheap receiver and an RCA line splitter, and connect the primary sub-out to the CD or any input EXCEPT phono (resistance is different on the phono rca's). remove the plate from the sub and run the speaker wire from the "pawn stereo" directly to the speaker. replace plate on sub to keep box sealed, and adjust receivers to desired level of bass & volume.
You have spent $50 and now have a decent sounding system again.

Posted on Oct 02, 2011

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Maybe the amp has a shorted output stage or the speaker is shorted. You might disconnect one from the other and see if that makes a difference. If it blows without a speaker load you need to take it to a technician for a look-see.

Posted on Mar 27, 2011

  • David Dunn
    David Dunn Mar 27, 2011

    And if it stops blowing the fuse without the speaker, the driver is shorted. Test it with an ohmmeter or just touch a battery across the inputs. if it sparks without making any sound it's shorted. If it clicks or makes staticy sounds it's probably ok.

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