penger Posted September 9, 2009 Report Posted September 9, 2009 I had the fuse in my Klipsch iFi subwoofer blow. It's a 2A 125V slow blow fuse. Went to a couple Radioshacks and they only carry a 2A 250V fuse. Is it okay use that as a replacement? At the first the lady said, "Probably, but I wouldn't bet my life on it." Second store guy said "You only have to worry about over-wattage." My concern is that if something hits say... 200V and the fuse doesn't blow, will I end up damaging other components downstream?
Beefy Posted September 9, 2009 Report Posted September 9, 2009 It is my understanding that current blows a fuse, not voltage. So you can happily use higher voltage parts.
Pars Posted September 9, 2009 Report Posted September 9, 2009 Yes, it is fine. It is the current rating that you need to pay attention to; that and whether it is fast blow or slow-blow. Most fuses seem to be 250V anyhow...
penger Posted September 9, 2009 Author Report Posted September 9, 2009 Thanks guys. What's the purpose of the voltage rating then?
nikongod Posted September 9, 2009 Report Posted September 9, 2009 the fuse may blow but still conduct (due to arcing) if the voltage is higher than rated wikipedia about 1/3 of the way down.
penger Posted September 9, 2009 Author Report Posted September 9, 2009 So now I have in my hands a fuse that says 125/250V...
penger Posted September 9, 2009 Author Report Posted September 9, 2009 And now I stuck it in, turned it on, and instantly blew the fuse... I guess my problems are a little more complicated now.
Dusty Chalk Posted September 9, 2009 Report Posted September 9, 2009 No, they were a little more complicated before, you just know that now. (I mean, seriously, how else do you blow a fuse on a speaker, unless you got amp problems?)
Fitz Posted September 9, 2009 Report Posted September 9, 2009 Did you put the fuse in the right way around?
manaox2 Posted September 9, 2009 Report Posted September 9, 2009 Did you put the fuse in the right way around? Got a multimeter?
penger Posted September 10, 2009 Author Report Posted September 10, 2009 Borrowing one tonight. Going to check the current across the holders later tonight.
cetoole Posted September 10, 2009 Report Posted September 10, 2009 Dont do that, measure DC voltage. Likely to blow your sub if you try and measure current by replacing the fuse with the dmm, since there is definitely something going on.
penger Posted September 10, 2009 Author Report Posted September 10, 2009 What value should I be looking/hoping for?
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