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In Reply to: RE: primary and secondary fuses posted by Lew on September 23, 2016 at 13:21:20
I'm wondering why some have rail fuses and some don't. May have something to do with the cost of repair?? I'm glad my amp only has one, at least until if and when it blows for some reason. T456
Follow Ups:
and have explained why there are slow blow and fast blow fuses? Tweak, We all know you have your way of thinking on power amps, AC mains, and how everything bigger is better and the Engineers have another.If something ever does go wrong with your amp's output stage or power supply, you will wish you had all those fuses with proper values in place that you think are not necessary.
Edits: 10/04/16
There is only one fuse in my power amp. The value is the max value the designer "allows". Anyone "should" be able to hear that a bigger fuse sounds better and no fuse at all, a short, will sound the best ,IMHO. This is not to say anyone should do this but it does lay the ground work for the rational for bigger than necessary diodes to be used. Bigger solid state outputs will also sound better. A bigger power supply, bigger transformers, bigger cap banks, bigger wire will also sound better, not only in my opinion but the opinion of Nelson Pass. You might want to read what the engineer Nelson Pass has to says about power supplies and bigger. Also a bigger power supply will often if not always have a bigger , safely and appropriately installed, bigger fuse. A big problem companies have with bigger is the bigger cost . Big Tweaker
> > > Bigger solid state outputs will also sound better. A bigger power supply, bigger transformers, bigger cap banks, bigger wire will also sound better,
This is just wrong. No surprises here I guess.
I don't know what amplifier you own, but if you were to look inside, it's possible that the rails are fused internally (either with a conventional fuse that is not mounted on the exterior of the chassis or using just a fine wire) or that there is some sort of current-sensitive device in the circuit that is designed to blow before damage is done to the output devices.
99.9% certain that there are no internal fuses. Looked inside once over 3 tears ago. It sounds a bit odd that some other device other than a fuse would be used for the purpose of protection??? Fuses, like prophylactics have pleasure reduction built in to them. No doubt about it, necessary or not. Of course, always use the correct fuse. T456
There it is.
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
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