Question about JBL PSW1000 Speaker

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Polk audio psw1000 fuse blown

The fuse continues to blow. Wrong rating? What fuse should be put into this sub?

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Posted on Jan 02, 2017

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SOURCE: Blows fuses

I found a post where someone replaced several capacitors with ones he described as titanium and a higher voltage like 100 v rating rather than 50 as oem. He states no more problems. I found this site while searching again. I also found a free download pdf repair manual from JBL - site defined as Harmon, and they show revised parts replacements for these caps - 100 volt. I just bought a used one and not hooked up as yet, but I plan to use slow blow fuses and possibly a little higher rating - not much though, and I believe there is a ceramic type - color solid white - that may withstand the apparant surge. Theres also a recent post somewhere for sale of the amplifer board... 64smi or something like that. Hope this helps. Ken

Posted on Mar 24, 2007

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sapperj
  • 70 Answers

SOURCE: jbl psw1000 no power

Have you checked all fuses. There might be 2 - one for the input and one specifically for the amp section...

Check to see if the speaker is fried. Remove the grill then place your fingers as evenly as you can aa couple of inches away from the cone. Press gently and listen. There should be no scrating sounds at all. If you hear this, first try repositioning your fingers. If it persists your speaker is fried. This is caused by a few reasons. Amp failed and took speaker with it. Or a large signal was inputted which causes the amp to hold its max power for a longer period of time (amplified signal is no longer a sine wave but a sqare wave).

Otherwise, unless you know what you are doing with AC (house power) I don't suggest you go poking around-you need at least a volt meter to start testing

Posted on Dec 22, 2007

SOURCE: fuse blows

Both 3 or 4 amp slow blow fuses are suitable replacements for the 3.125 amp subwoofer fuse.

It could be that the subwoofer is blowing the fuse because the one you installed was not slow blow.

But, more likely is the subwoofer has a short in the power supply which is causing the fuse to blow.

Posted on May 31, 2009

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1 Answer

What type a fuse do I use for my Psw 125 power sub


Is this a Polk PSW 125? I'd contact Polk customer service.
Here is the manual http://www.polkaudio.com/Media/POLK/Product%20Manuals/PSW110_125_MN.pdf
There is some discussion here http://forum.polkaudio.com/discussion/77264/psw125-blown-fuse
A blown fuse indicates something wrong. I'd contact Polk.

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Sounds like your fuse is rated too low, try a heavier fuse or search Retrevo Manuals.com and you may find a manual.

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Blew a fuse what kind dose it take is it a slow blow fuse or fast blow one,i took out the old fuse and it reads le.3a/250v is it a 3a or .3a


It is a 3A/250V fuse, also known as a 6A/125V fuse.

Power amps generally have slow blow fuses.

If this is helpful, please be sure to hit the "Thumbs-Up" for me!

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There is a huge discussion among audio enthusiast regarding subwoofer output and how you should connect your sub to your system. If sub preout is turned and on your amp/receiver and you are able to adjust the crossover frequency adjust your crossover frequency to highest setting, higher HZ number, so you don't double low pass filter your signal too much. If you can adjust crossover frequency on your receiver and your sub allows separate connection to by pass it's filter, use that instead.
There is a great article on Polk Audio website regarding Home Theater setup. You can use it as reference and tweak it to your taste.

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first you have to check any short circut , that may be inside of sub woofer unit .
find and sove any short circutry and then only replace the fuse with same rating.
and before you switch on it once again recheck any meterial shored with electronics pcb.

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1 Answer

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The power supply or amplifier has a shorted component.

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