The guru on fuses:


For two years, I have asked why and how fuses could possibly matter. All I got was arguments of faith, pro or con. I needed a real audio guru who actually knows. Here is a link from John Curl’s discussion on Parasound’s website. He engineered and designed some some great equipment, including some Mark Levinson gear, The Grateful Dead’s 30 plus McIntosh amp powered Wall of Sound, and his admittedly, somewhat price compromised Parasound designs. He discusses the electrical properties of standard fuses, showing how they are compromised. The entire article is quite enlightening, but to skip to the fuse section, go to the bottom half of page 6. https://www.parasound.com/pdfs/JCinterview.pdf

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Showing 38 responses by audio2design

Allnoise, how does doing a blind test, actually doing it, and it not being audible, change from year to year. You are making 0 sense.
With rare, very rare exception, no one claiming fuses are highly audible does a blind test. I have many times with people making a fuse claim. Funny, blind, they can never tell a difference.
Allnoise,
You confuse science and faith. I have no fear of my claims being tested, tested properly that is. I don't need my eyes to hear. Why do you?
Screaming and stomping your feet (figuratively) always wins the argument. How about not listening with your eyes for a change. Why are you so threatened by that?
Nice jump in sound quality over that vibrating metallic dingle berry that is now in the trash..fuses are subjected to shear wave interference and it carries on from there. Tom



I see you are using your hammer again. Only issue, the problem is not a nail. I must say you swing that hammer at everything. Don't hurt yourself.

I have read your posts Miller, unlike you, people, like actual professional people in the music industry, come to me when they want to learn. Real things, like actual things that happen, not made up stuff. You keep up with that delusion. maybe between you and tweak you can figure out that bending wave speaker ..... but I doubt it.
The difference was so great that .....


I like this new audiophile joke. Good twist on not using the wife for once. That was getting tired.
  • I am thinking your knowledge of materials is plating deep. That would be evident in using the same material terms no matter the topic. Have at it with mahgister and his embeddings.
The fuse he was talking about was in the speaker circuit, not the power circuit.  Also note his comment before about building an amp that he thought he did everything right, but still blew up when shorted. Just because someone has a "fancy name" even John Curl or Nelson Pass, they can be wrong and there are limits on their knowledge.
Why oldhvy because for all the bs about an amp just modulating the power supply, the reality is what makes for a stable supply and the properties assigned to audiophile fuses are not the same. It's all a smoke screen of ignorance.  Fuses feed into 10s or more feet of wire in a transformer and high inductance. Conveniently forgotten. A fuse that increases in resistance as it heats up (more current) would make for a more stable supply voltage. Yet people go gaga over low resistance. That is what happens when people who don't understand amps and power supplies make conclusions based on suggestion.
Nonoise you are only justifying george's statement about you. You made the comparison. It was a really bad one. Own it.
02-13-2021 5:12pmSo tweak, was that a ceramic magnet? Neodymium? Nickel coated? Stainless steel coated? 5*25? 1/4x1-1/4? But more importantly why do you hate children so much? Mom! Grandpa’s making us do weird stuff again!!! Do we have to go?
Nonoise that is a silly position to take. The fuse literally just an extension of all the wire in the transformer. There is no node in between. This is much different from the "miles of wire" before the amp argument as all there is a node where all the units connect together as well as a case grounding node and the potential for ground / neutral interaction.  A fuse is just an extension of the wire in a linear supply transformer and perhaps some resistance in front of a switch mode (rarely a bad thing).


Attempting to equate these two things only shows your lack of knowledge and proves my point about who advocates for fuses.
You pretty much just proved my point. When you only tool is a hammer, every problem is a nail.  From another discussion I am not even sure you know what shear velocity is.
Sorry can't find a link you provided anywhere. Saw you mention a design patent but that is not a functional patent (for what it does) only what it looks like.
That is not how design patents work. You either have a design patent, a utility patent or both. You said design patent and again I found no links. Design patents don't protect the function:

From USPTO


In general terms, a "utility patent" protects the way an article is used and works (35 U.S.C. 101), while a "design patent" protects the way an article looks (35 U.S.C. 171). ... Both design and utility patents may be obtained on an article if invention resides both in its utility and ornamental appearance.

Yup, talk about your patents day in day out but expect us to find them from months and months sgo ... With the search here. Okay ....
The other thing, in the article it made it sound as if measuring-recording-analyzing transients (fuse resistance change in this example) was difficult. It is easy.



It is only difficult to people who don't know how .... which are people making those statement. Not a coincidence.

Generally, those that do blind testing do not trust themselves and already think there is no difference.



Would you like a shovel to dig yourself out of that hole?

I am under no delusions that I have magical powers that protect me from all bias, however the many audiophile friends I have are not protected either and it is their claims I disproved not mine.

The unwillingness to subject oneself to blind testing shows you lack the confidence you profess to have.
Interestingly enough bluemoondriver the fuse types call silver cable bright and copper cable warm ...
And again we have millions who claim that vinyl is more realistic than good digital when the truth could not be farther away. Anyone who has heard live what is coming off the microphones knows that tape and vinyl is a softened and colored version of reality.

There are many many thing millions or billions believe that is simply not true.

It speaks volumes that so called audiophiles don't trust their hearing enough to do a blind test.
I just did a quick look through system images. 25 expensive systems in and only one with remotely half decent acoustic treatment. I saw a 50k-100k speaker almost up against a glass patio door, no doubt same cost in electronics, speakers near the front wall, no treatments. 95% or more of system photos show inadequate acoustic treatment (and they are not near field ) and over 90% have none.  I would not trust any review of anything in those acoustic messes.
audiotweak


That is because you only sort of understand one thing and hence for every problem you swing the hammer. The bending wave speaker creates a pressure (longitudinal) wave, as it must, which means it must move, as a whole, in and out, though less of it moves in and out dependent on frequency.

I have to go with Caykol, what have you been smoking? Fuses dude, fuses.
Shear does return to the source and therefore generates interference. Shear is how a speaker works.Some energy moves straight off the center of the cone or membrane. The rest moves on both sides and thru the cone..and guess watt it hits the surround and the frame and returns back down the cone and interferes with the note that's coming its way. And it also bounces off the dust cap.. A head on collision...same goes for your audio room. The world is not just compressive it is also shear.
Shear upon impact is like breaking all the balls when playing pool. Energy goes everywhere and into the next material boundary..



Okay, now I am convinced you don't know what you are talking about. Thank you for clearing that up.


"shear" is not how a speaker works. In an ideal speaker, there would actually be no transverse waves in the cone material at all, but they are unavoidable. If you could make a perfectly stiff cone, there would be no transverse wave at all. However, that is not practical and hence why we have cone breakup which everyone is quite aware of, inverse dusk caps, etc.  This is not news. This also has nothing to do with fuses.  Put the hammer away. Wrong problem.

Swing that hammer Tom, swing away!

Most people who deal professionally with waves would refer to them as transverse waves but whatever.

Thank you for describing refraction. I am sure no one knows anything about that. However, if you think that shear waves are the only transmission in a solid, of course you would be wrong, and that would apply to lead and brass too.  Breaking the balls playing pool is longitudinal wave transfer, not transverse by the way ... you know compression and decompression. May want to work on your analogies there.

Thinking everything is shear ... is not going to lead to good acoustic products.
One of us could explain it, but it would be far more entertaining to let rodman99999 et. all jump through hoops while doing mental gymnastics trying to justify why the fuse will matter more than the extra 10,20,30, 100 feet of wire switched in/out of the circuit when connecting to the 120/240V tap (assuming it is not a switch mode).

I personally enjoy the angry use of caps, the avoidance of listening without their eyes, and calling others angry while you can tell simply from their writing how worked up they are.

Sure bud. No one ever considers vibration (transverse wave).  Nope, no driver vendor has ever considered it  You are coming across now like Kenjit..
It was a fine but failed attempt to appear superior theaudiotweak, but digitally, if someone cared, you can actually differentiate from the initial signal and reflections quite effectively in the digital domain similar to how Kippel can achieve anechoic like testing at bass frequencies, even in a room with reflections at wavelengths < bass frequency measured.

The question would be why would anyone bother, when they could just start with digital except to attempt to recover information (once and only once) from old records. Of course that has already been done with a multitude of digital techniques. Keep swinging that hammer.
Glad I have you thinking and exploring things you never had..


See what Caykol wrote. That is what I am thinking.

OMG ... do you even know how "sound" travels in a material. Transverse waves are not the only method. Even solids have longitudinal waves.  When vinyl is cut, it is intentionally cut at reduced speeds to reduce impacts of vibration ... you know the non-fancy name for what you mainly call shear. But really, who cares. The vinyl is already pressed and if it is new vinyl, it is pointless you should have just stayed digital.
So, you of course have measurements confirming your hypothesis, not to mention calculations putting some bounds on the effects?  You are pretty much stating the obvious, like cables have resistance, but without quantifying it does not mean much.
Well I have listened, and have "made" many audiophile friends listen to, on their system, with their boutique fuses, and my generic new ones. Not once, literally not once could they pick out the boutique fuse blind in a power supply circuit. That is 10 people, about 15 tests. How many times do I have to replicate the test to prove the point?

The reality is, though, that I could detect a fuse change with equipment, measuring only at the power supply, at the very limit of continuous power, but would be very difficult, if not impossible to detect at the output, due to the supply filtering, and feedback, either local or overall of the amplifier.