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In Reply to: RE: Public Service Anouncement! posted by Audiolover718 on May 20, 2011 at 15:16:57
"I made sure I checked the continuity of the circuit with a multimeter to make sure I had the proper orientation..."
Now that's really interesting, how did you do it?
I'm glad you like your new fuses but wasn't too surprised since most folks seem to like the brand. However this is the first I've ever heard of anyone managing to measure the directionality and I'm intrigued.
Thanks, Rick
Follow Ups:
To me, the furutech fuses indeed sound "correct" when the printing is read properly in conjunction with the signal flow. For example, when using them on the rear of your equipment with the screw in style holder, they work best with the letter F placed "machine side first, H side into cap holder.
For internal fuses, use the continuity setting on your meter to trace AC flow. Put one probe on the positive AC input IEC connector or blade and the other on one of the clips of the fuse holder. When you get continuity on either the right or the left clip, your meter will let you know. That's the direction of the AC. Orientate the fuse so that the letter F is on the side where you found continuity. This has proven to always get it right for sure. I originally did it with my ears and got it right, but then double checked with the meter to be sure. The meter confirmed what I already heard with my ears, but just wanted to be sure because I'm anal.
@Audiolover718- I have recently replaced the 4 internal rail fuses of my Parasound Halo A-21 amplifier with Furutech fuses. The result is really good and it matches with everything that you said about the clarity, the depth and height of the soundstage. Although the clarity improved significantly but the treble sounds a little metallic and harsh which I don't like. The amplifier has had around 300 hrs of running after I replaced the fuses.
Did you have similar experience?
I am a little confused by your explanation of how to find out the orientation of the current flow by looking at the word Furutech on the fuse. If you are saying that the printing is read properly in conjunction with the signal flow then I would assume that current flow is from F to H. If this is true, I would put F side on the fuse holder and H side which goes inside the machine if the fuse is inserted at the back of the equipment. This orientation will match the current flow from the wall receptacle to the equipment. Could you please clarify this orientation doubt?
Thanking you in advance.
"Put one probe on the positive AC input IEC connector or blade and the other on one of the clips of the fuse holder. When you get continuity on either the right or the left clip, your meter will let you know. That's the direction of the AC. "
I'm not sure what all this means but with AC there is no positive and there is no "direction". That's why it is called AC!
Undurstood, but We are talking about continuity of a circuit here, not about the alternating aspect of AC. There is still a circuit path to be taken into account. Yes it is AC, but fuses for some reason, DO sound better one way or another. I claim no insight as to why, but know for certain that this "voodoo" causes palpable changes in sound.
Thanks for the detailed explanation, that makes sense. You are just using the meter to help you get them in the direction that you've already determined sounds the best.
Since the fuse business seems to still be in the black-art stage I was amazed, but hopeful that you had found am independent method of predicting the outcome. Independent of listening that is...
Thanks, Rick
Right Rick, I just used the multimeter to confirm my original hypothesis. I'm pretty sure that you could probably skip the listening tests and go straight to the multimeter to get the proper orientation. I would be willing to bet that everyone who happened to chose the "right" orientation be ear will also have the multimeter "agree" with their findings. In the event that somehow the difference is hard to hear between polarity, then the multimeter would allow one to not have to obsess over it.
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