Fuses


I’ve read of views on whether amp fuses impart any sound quality or coloring. I had a recent experience that has made me re-think my views (fuses do not affect sound) and wondered if others had a similar experience. 
I have a Line Magnetic integrated amp. After heavy regular use for over 5 years, one day it just wouldn’t power up. After checking the power supply, I assumed it must be a blown fuse. I recalled that Line Magnetic sent with the amp two replacement fuses of the same type/quality that was pre-installed. I dug out one of them from storage, replaced the fuse and the amp powered up normally. 

What surprised and delighted me was the change in sound with the replacement fuse. Fuller bass, more detail and more warmth. I have rolled the tubes several times in the amp, and am attuned to the subtle changes that can make. Popping in a fresh fuse seems to have had a similar affect. And these appear to be cheap fuses, available for a few dollars at most. I don’t think I understand any of this. 
bmcbrad

Showing 8 responses by oldhvymec

Breaking news ... oldhvymec is to feature in the latest DC comics movie as ‘ Audio Man ‘ he has the ability to hear through time ... he can even identify that Queen Elizabeth the 1st wore wooden dentures.

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The difference is tomorrow I'll wake up a nice guy with a good memory.
Unlike YOU who will still be an A$$HOLE and continue to be one.
Insulting others is not a very nice thing to do.. Seems to be the way things are with you.

How many littles pearls of wisdom did you offer up other than the normal insults, along with a good supply of just plain stupid.. Mind your own business.

Let me make it real plain to YOU, You're not welcome, learn some manners using my name in reference to anything.. Rude MF
You took a worn out fuse and replaced it with a new one. The end caps were 5 years old and been turned off and on how many times?

You could have done one better by cleaning the fuse pocket and treating it with contact enhancer then wrap the fuse with a piece of tape or a dab of silicone on the barrel. 

Yes one way will sound different depending on the gear. Some can't hear a difference, some can and some can't make up their mind..:-)

Regards
And how do you connect the fuse wire to the end cap? Make your own?

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You can not evaluate sound quality this way as your own internal biases can affect the outcome even when you are sure they can’t. In short, you can remember what you heard but you can’t remember what you heard sounded like even if you attempt to characterize it. It is impossible, none of us can because out brains are not wired to do this. People are dead certain there heard a difference which births the mythology and an industry base on psychological deception.

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Not only can I remember, I can remember over years and years. I just contacted a buddy of mine I hadn’t spoke to in 35 years. He new exactly who I was and I knew his voice and the change in his voice from wearing dentures as well.. How’s that for being able to remember sound. People who are trained in the art of listening have to remember sounds and how to identify sound when there is all kinds of other noises also.. You have to listen through the noise to get to the sound grasshopper..

Regards
Breaking news ... oldhvymec is to feature in the latest DC comics movie as ‘ Audio Man ‘ he has the ability to hear through time ... he can even identify that Queen Elizabeth the 1st wore wooden dentures.

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My original got disappeared, imagine that..

As if the Queen would wear wooden dentures. BUT I could tell the difference between wooden and porcelain, choppers.

Jealousy always did bring unkind words.
he art of listening and I was paid for it.. 45+ years..

Heavy Duty Master Mechanic Retired. OE, Teamsters and IMA(S)W.
No Regards
VTL and the old Marantz both use (frequency collection (bypass)) caps, I’ve seen more than one older Mac with FC caps too. .01 usually. Doesn’t change anything but ADDs a twinkle if you add one or two in parallel.

A really good PIO with a FC cap that’s a copper foil (no oil) or teflons.

I like V-Cap.

Teflons and silver foil both are like razors, I don’t care who makes them..
Takes forever to break them in. But they are really worth it.. Copper foil, or with oil. I’m not so sure. I’ve been running them for a while.. We’ll see. Teflon/alu foil, copper or Silver foil caps.. $$$$. They are non magnetic too.

I match the voltage too on the FC cap. That can cause issues in a passive crossover, I’ve done that and it does cause a timing issue.

200vac with a 600vac cap won’t work correctly.. 600 and a 630 is a lot better.. 200 and 200 :-)
I added the Jupiter bypass as an experiment to see if the more expensive caps make a difference, and they do.

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What about this part george?

They do make a difference, he just suggest a single cap and continues to ask questions, look at what he wrote.

ALL question marks? NOT Statements.. He is ASKING if it might be better, or if it might change the timing.. I say use the same voltage and it won’t. :-)

There is more than one mad scientist around you know.

Regards

Well that's better than eatin' bugs.. :-)

You know you don't have to accept the gift my friend, return it to the giver. Pretty simple.. If he is really bugging you let admen know to give him a chat. I've never had to but I suppose there is a place and a time..

Regards