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Direction of aftermarket fuses (only for believers!)

It is with reluctance that I start another thread on this topic with the ONLY GOAL for believers to share their experience about aftermarket fuses.
To others: you can call us snobs, emperors w/o clothes,... etc but I hope you refrain posting just your opinion here. If you did not hear any difference, great, maybe there isn’t.

The main driver for this new post is that I am starting a project to mod my NAD M25 7 ch amp for my home theater. It has 19 fuses (2 per channel, 4 on the power supply board, 1 main AC) and I will try a mix of AMR Gold, SR Black and Audio Magic Platinum (anyway that is the plan, I may try out some other brands/models). As it is reasonably difficult to change them, esp the ones on each channel module that requires complete disassembly, I would like to know what the direction is for these models mentioned and of course, others who HAVE HEARD there is a difference please share your experience on any fuse model you have tried.

Fuses are IME directional:
Isoclean is one of the first to indicate the direction (2008/2009) on their fuses. Users of HiFi Tuning (when the awareness rose quite a bit amongst audiophiles) have mostly heard the difference.

As an IEEE engineer, I was highly skeptical of cabling decades ago (I like the speaker design of John Dunlavy but he said on many occasions that cables nor footers matter at all, WRONG!). Luckily, my curiosity proved me wrong as well. I see the same skepticism that I and many others had about the need for aftermarket cables many, many years ago now on fuses and esp on the direction on fuses.

Another example is the direction of capacitors (I do not mean electrolytic types). Even some manufacturers now and certainly many in the past did not believe it can make a difference sonically. Maybe some do but it takes time in the assembly to sort and put them in the right direction/order (esp as some of the cap manufacturers still do not indicate "polarity") so that maybe is one argument why this is not universally implemented.








jazzonthehudson
geoffkait's avatar
geoffkait
14,147 posts
 
jea48
2,076 posts
05-25-2016 4:59pm
geoffkait,

You can’t even provide proof of any credible third party test that fuse directionality is audible.

Why would they test for audibility? They test for measured parameters. Remember? Unless you count audio reviewers.  Would that meet your obviously high standards? 
geoffkait's avatar
geoffkait
14,147 posts
 

atmasphere
4,822 posts
05-25-2016 5:29pm
Geoffkait: just to set the record straight, UL is not a requirement or a directive, it’s a guideline or standard.

to which Atmasphere replied,

"I did not state that it was. I did state that the CE mark was a directive, and that there are others. You simply chose to misinterpret, as part of your on-going program to make others wrong."

wiggle, wiggle...

then Atmasphere quoted me here,

Geoffkait: The insinuation that tests that don’t get the "right" results are not honest or careful is rhetoric. His rhetoric. I’ve already pointed out that a scientifically correct test would eliminate the fuse holder altogether.

"Al is not prone to rhetoric. OTOH such seems to be your lifestyle."

What exactly are you insinuating? 


atmasphere closed with this comment,

"A scientific test would not eliminate the fuseholder, not if you actually wanted to know what is going on."

You can test the fuse holder separately if you really were interested in arriving at the truth. I realize you and Al are just playing Ivory Tower, and have no interest or plan to test either the fuse or the fuse holder. That’s the difference between a Skeptic and a Sceptic.

Cheerios
jea48
2,944 posts
 

geoffkiat said:

Why would they test for audibility? They test for measured parameters. Remember? Unless you count audio reviewers.  Would that meet your obviously high standards?

So now you are admitting there are not any credible third party tests that prove fuses are directional. Finally!
geoffkait's avatar
geoffkait
14,147 posts
 
jea48
2,077 posts
05-25-2016 5:51pm
geoffkait said:

Why would they test for audibility? They test for measured parameters. Remember? Unless you count audio reviewers. Would that meet your obviously high standards?

So now you are admitting there are not any credible third party tests that prove fuses are directional. Finally!

Finally what? I never said third party testers tested for audibility. And the reason I never said it is because they don't test for audibility of direction. If you’re trying to convince me you’re a little obtuse you’re doing an excellent job.

cheerios
stevecham
3,298 posts
 
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