Jitter, are you referring to the Shuttle that exploded on take-off or the one the disintegrated during recently?
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pbnaudio Geoff, Any fuse supplied to NASA or any other Aviation Enterprise must be tested and supplied with documentation detailing repeated tests detailing that it works as intended. Hardly the case of all the BS that souround “Audiophile” fuses. The kind of testing and documentation that is provided by reputable companies like Bussman and Littlefuse. >>>Now you’re being ridiculous. Audiophile fuses are not (rpt not) intended for aviation or space applications. Nor are the stock Bussman or Littelfuse used for either aviation or space applications. Follow? Besides you seem to be blissfully unaware of the data sheets supplied by HiFi Tuning detailing the test results of HiFi Tuning fuses and other brands of fuses, including stock fuses, not to mention cryod fuses vs uncryod fuses and fuse directionality. Other Aviation Enterprises? Did you make that up yourself? Do you mean like hang gliding? Drones? |
I guess one way to look at this is quite simple. Replacing the 6.5A fuse with an 8A is perfectly fine..........until it isn’t, but then it’s too late. Beyond that I have to take exception to a comment made by @auxinput. In his post he made the following comment... "Generally speaking, a higher amp fuse is a thicker wire with less resistance. It will allow more current and faster current through to the device and the result can be improved dynamics and punch/power in the sound." While his point is theoretically valid consider this.... The speed of electric (electromagnetic) field propagation in copper wire is slower than in vacuum by a factor referred to as the velocity factor. The speed of electromagnetic waves propagate in vacuum is 299,792,458 meters per second. The velocity factor for a 12-gauge copper wire copper wire is about 0.951 (according to this source). Therefore, the speed of electricity in a 12-gauge copper wire is 299,792,458 meters per second x 0.951 or 285,102,627 meters per second. This is about 280,000,000 meters per second which is not very much different from the speed of electromagnetic waves (light) in vacuum. My point, respectfully to @auxinput is that if you can hear a difference in the thickness of the material in an 8A fuse vs. a 6.5A fuse then dude, I want your ears! This just seems like a logical fallacy to me. |
Geoff, No documentation like this for an example http://www.littelfuse.com/~/media/electronics/datasheets/fuses/littelfuse_fuse_325_326_datasheet.pdf... I purposefully picked the ceramic body ones - this way - should you decide to buy some, you can color them with your Crayons to any color you'd like Good listening Peter |
Stubborn cuss, ain’t he? God gave you two ears and one mouth for a reason. I don’t subscribe to any fuse or cable manufacturer that doesn’t control directionality. I don’t even care if they’re UL listed or not. Whaddya think about them apples? 🍎 You are free to do whatever you want. Live and let die, I always say. |
@falconquest - in response to bumped up fuses. I did say "generally speaking" and also said "there is a point where it doesn't make much difference". I have heard definitely improvements on bumping up a 1A fuse to a 2A fuse in a preamp. Heck, I have even heard improvements in going from 1A to 1.6A. The sound with the larger 2A just hits with more authority, more power and better resolution. However, that's the most I will go. I have seen some preamps that use a higher amp fuse (such as a 2.5A in a Krell Phantom), so a 2A is not out of the ordinary. Usually, these larger amp fuses make more of a difference in preamps that use Class A circuits because they are such current hogs. Things that use normal op amps or a small amount of op amps may not benefit as much with the larger fuses. The difference between 6.3A and 8A is going to be a lot less - probably too small to actually hear a difference. But there could be a -very- minor improvement. As far as these NASA comments, either they are a troll or coming from an inexperienced point of view. NASA will have completely different requirements for their fuses - such as extreme reliability, exact breaking/melting point, ability to support high speed digital circuits, etc. They will not have the same requirements as far as allowing the voltage into an analog equipment to sound pleasant or with a specific character. |
That’s complete hogwash. Almost all fuses come with 30 or sometimes 60 day money back guarantee. One exception is the very latest Audio Magic Ultra Beeswax or whatever it’s called. As for NASA fuses you’re all wet on that one, too. The NASA advanced fuses were discussed a few months back by your humble scribe, who happened to be in satellite operations for NASA for a bunch of years, including pre-launch activities, launch and on orbit operations. Better luck next time. Besides, could 70,000 satisfied aftermarket fuse customers be wrong? |
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For the record AMR fuses come with a 30 day guarantee and IIRC the earlier Audio Magic fuses also come with a guarantee, at least through one big dealer. Not that it matters much as I was informed during a conference call with the primary US fuse dealer and the major fuse players that the bulk of fuses sold these days are SR or HiFi Tuning. |