Question about PSB Alpha Sub Zero Subwoofer

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No LED light on PSB Alpha Subzero-i and keeps blowing fuses.

I get no green light when I plug in and turn on the sub. Used the replacement fuse - no cigar. The sub uses 1.6a fuses, went to hardware store and bought 2 however they were only 1.5a (all they had), both blew instantly upon turning the power on.



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  • Anonymous Jul 10, 2008

    No LED light on PSB Alpha Subzero-i and keeps blowing fuses.

  • Anonymous Dec 05, 2008

    I have the same problem. After a couple of years, the sub was not working. The fuse had blown. I replaced it with the supplied fuse, which blew right away as soon as I powered up the unit.

  • whittingtom May 04, 2009

    sub do not wook keep blowing fuses

  • atomboer965 May 11, 2010

    I had a similar problem with my PSB subzero 5i subwoofer. I took it to our local authorised dealer and they replaced a circuit board. They say it could have been a power surge that could have been the problem. It is playing fine now. Great to have it back, it makes such a difference.



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Go to a 2 amp fuse. There's obviously too much juice for a 1.6 amp fuse to handle, so graduate in small increments the load capacity of the fuse. After replacing, slowly increase the volume to where the source material is at a comfort level, and see if it can handle the juice.

Posted on Sep 22, 2008


Others have had similar problems with the amp on this model. There is probably a circuit design error which causes some components to blow and as far as I've read, fixing it (or replacing the fuse) won't make the problem go away for long. Try contacting PSB or the retailer.

Posted on Jan 06, 2008


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