Fuse Blown in Subwoofer - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 16 Old 01-31-11, 11:55 AM Thread Starter
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Fuse Blown in Subwoofer

Hi Guys and Gals,

I have an older subwoofer and it looks like the fuse is blown. It is a 0.63A/250V or as it says on the Sub 650mA/250v. I went to The Source (radio shack) and the guy told me to just by a .5A/250 as they did not have the .63 or 650mA type. As soon as I plugged the sub in the fuse blew. Would I be better off buying a 1A/250V instead as I can not find the correct one anywhere?

Man I hope my sub still works.. don't have the money to replace it..

Any help would be apprechiated..
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post #2 of 16 Old 01-31-11, 12:20 PM
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Re: Fuse Blown in Subwoofer

Your sub is blowing fuses for a reason. Putting in a high value fuse will result in damaged components. The amp needs to be serviced.
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post #3 of 16 Old 01-31-11, 12:22 PM
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Re: Fuse Blown in Subwoofer

.63 amps on the AC input is not a very big fuse, in consideration that the original fuse blew and the .5A fuse blew immediately upon plugging in the sub chances are there is something wrong with the amplifier.

I really doubt that a larger fuse will help, but if you want to try a .75 or a 1 amp fuse its probably not going to hurt anything. I would not just keep putting bigger fuses in it though since eventually there may be a fire hazard.
Wal-Mart has a good selection of fuses in the auto section.
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post #4 of 16 Old 01-31-11, 01:42 PM Thread Starter
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Re: Fuse Blown in Subwoofer

Thanks for the information.. I was able to talk to a guy from Klipsch and he mentioned that I needed Slow Blow fuses and recommended I use the Radio Shack 270-1021.
We do not have Radio shacks anymore so I am hoping The Source carries te same one. I would guess as long as the specifications match I should be able to use what ever one I can find?
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post #5 of 16 Old 01-31-11, 02:20 PM
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Re: Fuse Blown in Subwoofer

Yes, and if it blows you have a problem that needs to be fixed.
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post #6 of 16 Old 01-31-11, 08:54 PM
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Re: Fuse Blown in Subwoofer

Hardware stores and auto parts stores will have slow-blow fuses and if one more fuse blows Mike P is right, you have a problem that needs to be serviced.
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post #7 of 16 Old 01-31-11, 10:34 PM
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Re: Fuse Blown in Subwoofer

Not the best way of trying to correct the problem by putting in a bigger fuse, all that does is let more damaging current through to further hurt what the fuse is protecting. Get the amp serviced as suggested above.
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post #8 of 16 Old 02-01-11, 09:49 PM Thread Starter
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Re: Fuse Blown in Subwoofer

Well after talking to the tech from Klipsch he said the proper fuse to get was the 1A/250V Slow Blow fuse. So I headed out and grabbed the one he suggested and presto.. I have base again.. thankfully.
You don;t realize how much to miss it until your kid watches Star Wars and the big mothr of a ship rolls over the screen and you almost hear nothing... well the base is back
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post #9 of 16 Old 02-01-11, 10:44 PM
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Re: Fuse Blown in Subwoofer

Its interesting that it had a .63 amp fuse in it, I wonder how it got there ?
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post #10 of 16 Old 02-02-11, 06:34 AM
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Re: Fuse Blown in Subwoofer

I'll guess a worker in a factory installed it.
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