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  1. #1

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    Default HiFi-Tuning Fuses

    I have reached a point where I am content with my two channel choices. But, in my never-ending quest to improve the overall sonic characteristics, I continually seek means to extract further improvements.

    There has been a lot of talk lately regarding ‘Audio’ grade fuses and their contribution to the overall system characteristics. After researching and some enquiries, I decided to replace the stock fuses in my pre-amp and amp with HiFi-Tuning fuses. Two replacement fuses were ordered from Parts Connexion.

    Once the fuses were received, I removed the externally accessible fuse from the Simaudio W-3 amplifier. The existing and new fuse ends as well as the external portion of the fuse holder were cleaned with Caig ProGold. The existing fuse was reinserted in the amp and a listening session was conducted. The new fuse was then inserted and the same selections were played.

    I found the HiFi-Tuning fuse allowed the amp to create a more realistic representation of the source material. The presentation was more dynamic and allowed me to hear intricate details I was not aware of before. Acoustic instruments sounded more natural and occupied a more precise spatial location. Mainstream (electronic) material also benefited from these noted improvements.

    I then removed the power supply component of the Simaudio P-5 pre-amp from the audio rack. The component was opened, the existing fuse was removed, the fuse holder was cleaned with Caig ProGold and the replacement fuse installed. The same selections previously used were once again played. The above noted improvements were even more pronounced.

    I never would have thought replacing a fuse would add this level of refinement to a component. The collective refinements from replacing the two fuses add a new level of realism that is thoroughly enjoyable to listen to. Some may think the price for these replacement fuses is outrageous, but based on the obtained results, I can easily justify the cost and even think it may be a bargain compared to the overall cost of the system.

    I am so impressed with the results I will be going through the remaining components to determine where a replacement fuse should be installed.

    Till next tweak,


    JM


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    Last edited by jm1; 01-30-2008 at 12:38 PM.

  2. #2
    Old Polk
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    Nice write-up, thanks!

    I've read several reviews on the AHP "Critical Link Fuse" (gold plated OFC copper ends and element, ceramic internal insulation plus dampening) and just spoke with a guy who experienced similar results to yours with his PS Audio GCA-500 using them. I'm going to try a pair in my GCA-250.
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  3. #3

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    Many people have used ceramic fuses to replace the standard wire fuse with good results.
    madmax
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    I read this and wondered:

    Would replacing the fuses in speakers have this effect? For that matter, what about the fuse holders?

    A while ago I started a project to replace the wire in some peakers of mine. On of the first things I saw was the fuses, and it got me thinking about them as a chokepoint. Any thoughts?
    I smell ass, burning ass, glowing cherry red spanked ass.

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    Good review :)
    JC approves....he told me so. (F-1 nut)

  6. #6
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    Quote Originally Posted by amulford
    A while ago I started a project to replace the wire in some peakers of mine. On of the first things I saw was the fuses, and it got me thinking about them as a chokepoint. Any thoughts?
    Well, the run of the mill fuses are definitely a change in gauge and material from what lies on either side of them. A choke point? I'll let the resident EE's speak to that.

    When it comes to fuses in the power supply, the disparity in gauge and material is even more pronounced. I realize they're there as a fusible link and the material is engineered to break the circuit by simply melting (before the good bits do.) So, absent a mechanical reset arrangement tripped by heat accumulation, there will always be the disparity. I'm working on the theory that building a fuse with better quality material, an insulator other than a vacuum, and vibration dampening will provide a better quality power pathway.

    Relative to the money I have in PCs and line conditioners, the cost of the fuses is spit in the ocean--and worth a test.
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  7. #7

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    Makes sense, something to try.

    Anthony, you know how to responsibly listen and not clip your amps. Don't replace your speaker fuses, bypass them altogether.

    Cheers,
    Russ
    Check your lips at the door woman. Shake your hips like battleships. Yeah, all the white girls trip when I sing at Sunday service.

  8. #8

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    Default Update

    One evening, I started listening to the Led Zeppelin four CD box set. When finished for the evening, I had listened to most of the four discs. From an overall fidelity perspective, I do not recall these discs ever sounding so good and with this much micro detail. I now need to revisit other recordings I have neglected these past years for one reason or another.

    I opened up the DAC to determine the value of the fuse to see if a replacement was available. The fuse has leads and looks to be soldered to the transformer terminals! I looked at some online fuse catalogues and found fuses with leads. If I decide to keep the DAC for any length of time, I may enquire about replacing this with an internal fuse holder.

    In all my online readings, I do not recall anyone replacing the fuses in their powered subwoofer plate amp. I am curious about the outcome of this change and decided to order two replacement fuses; one for each sub. This should be an interesting experiment.

    I haven’t decided to if I will replace any fuses in the Pioneer player. I will wait until I have evaluated the subwoofer fuse replacement.

    Fuse Holders

    I am not absolutely sure regarding this, but I recall there was a company that made a good quality replacement fuse holder. Some had used this replacement holder in their equipment. If I recall correctly, this replacement fuse holder is no longer available. If anyone is interested in pursuing this, you will need to verify this information.

  9. #9

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    The subject of fuses is a hot topic with Magnepan speakers! I prefer to have fuses as I have kids and sometimes volume controls get twisted and not noticed prior to pushing the "on" button. I purchased some cryo (frozen) treated ceramic fuses through a website referenced on the Audio Circles forum. Using them in my Magnepan 1.6's had a positive effect. Interestingly I also tried them in a pair of Monitor 5B's, and they had a nice taming effect on the SL2000 tweeter!

    BlueMD - where do you get the AHP fuses?
    DKG999
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  10. #10
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    Quote Originally Posted by dkg999
    BlueMD - where do you get the AHP fuses?
    PS Audio carries them:

    http://psaudio.com/products/criticallink.asp

    But, I'm looking for another source. I can't find a link to AHP direct but, hopefully, PS Audio isn't their sole point distributor (@$29.95/each!!) The dealer I've hooked-up with for several PSA pieces can get them for $26.95/shipped. Still not much of a break.
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  11. #11

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    Quote Originally Posted by RuSsMaN
    Anthony, you know how to responsibly listen and not clip your amps. Don't replace your speaker fuses, bypass them altogether.
    Just think of Anthony leaving Troy's house after S.C. Polkfest 2004, leave the fuses in Anthony :p
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  12. #12

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    I believe that PSA is the only North America distributor for the fuse. Additionaly, the fuses also only come in the small (5x20mm) size. They gave no indication if/when a large version of the fuse will be available when I enquired.

    Fuse Holder

    Found this externally accessable fuse holder at Parts Connexion.

  13. #13

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    EDIT: Nevermind.
    Last edited by Early B.; 09-27-2006 at 05:33 PM.
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  14. #14

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    I tried the HiFi fuses awhile ago and didn't find them any better than the ceramics from Digi-Key. That's not to say that they don't benefit someone, and moreso JM but they made no difference in my Magnepan. A friend of mine had the same experience albeit we owned the same speaker....food for thought.

  15. #15

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    Quote Originally Posted by hoosier21
    Just think of Anthony leaving Troy's house after S.C. Polkfest 2004, leave the fuses in Anthony :p

    What do you mean by that???;)

    Nah, I can do without 'em. Besides, I have WAY too much time and money in them to f#ck 'em up now...
    I smell ass, burning ass, glowing cherry red spanked ass.

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  16. #16

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    Just ordered one for my int. amp from these folks:

    www.xtremecables.com
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  17. #17

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    The new fuses arrived and have been installed in the two subwoofers. My initial impressions were that there was more detail and texture. I have had the opportunity to listen several times since and still have this same impression.

    The system is now more dynamic and ruthlessly revealing leaving music no where to hide. Well recorded material sounds amazing. I also accept that the system is not trying to make poor recordings sound ‘better’ than they should. This in no way diminished my enjoyment of lesser quality recordings.

    Overall, I welcome the additional contributions the fuses bring the system. I will note that not everyone who has tried replacement fuses has experienced positive results. If you are at a state of system contentment, I encourage trying replacement fuses. I would suggest starting with one (power amp) or two components first to determine if any perceived benefits are noted.

  18. #18

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    Little tweaks are what make this a fun hobby, rock on JM.

  19. #19

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    Hi Doro,

    I have no experience with Magnepan speakers. I am interested if you have any thoughts on why the fuses did not make any difference for the speakers.

  20. #20

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    Quote Originally Posted by jm1
    The new fuses arrived and have been installed in the two subwoofers. My initial impressions were that there was more detail and texture. I have had the opportunity to listen several times since and still have this same impression.

    The system is now more dynamic and ruthlessly revealing leaving music no where to hide. Well recorded material sounds amazing. I also accept that the system is not trying to make poor recordings sound ‘better’ than they should. This in no way diminished my enjoyment of lesser quality recordings.

    Overall, I welcome the additional contributions the fuses bring the system. I will note that not everyone who has tried replacement fuses has experienced positive results. If you are at a state of system contentment, I encourage trying replacement fuses. I would suggest starting with one (power amp) or two components first to determine if any perceived benefits are noted.
    Good marketing!

  21. #21

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    Mine arrived today. I'll pop it in and let y'all know the results.
    HT/2-channel Rig: Sony 50” LCD TV; Toshiba HD-A2 DVD player; Emotiva LMC-1 pre/pro; Rogue Audio M-120 monoblocks (modded); Placette RVC; Emotiva LPA-1 amp; Bada HD-22 tube CDP (modded); VMPS Tower II SE (fronts); DIY Clearwave Dynamic 4CC (center); Wharfedale Opus Tri-Surrounds (rear); and VMPS 215 sub

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  22. #22

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    Listened some more to see if I could tell a difference. The answer is: "I dunno."

    When I first installed the new fuse, I thought I heard a slight improvement in detail. Since I introduced a new power center only a few days earlier, it's tough to state definitely if the changes are due to the fuse or to the power center breaking in. I'm not interested in switching out the old one and new one to discern any differences. I'll leave that to other folks to do. Still glad I bought it, though, just for peace of mind.
    HT/2-channel Rig: Sony 50” LCD TV; Toshiba HD-A2 DVD player; Emotiva LMC-1 pre/pro; Rogue Audio M-120 monoblocks (modded); Placette RVC; Emotiva LPA-1 amp; Bada HD-22 tube CDP (modded); VMPS Tower II SE (fronts); DIY Clearwave Dynamic 4CC (center); Wharfedale Opus Tri-Surrounds (rear); and VMPS 215 sub

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  23. #23

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    This is a pretty old thread, but I was searching the forum for information about HiFi Tuning Supreme fuses because of an unusual experience I recently had.

    I just purchased and installed a Silver Circle audio Pure Power One 5.0 power conditioner. I bought it from The Cable Company, which had taken it in on trade for the most recent Silver Circle Audio power conditioner -- the Tchaik 6. The unit I purchased did not come with any sort of manual, owner's, operator's instruction, etc. -- and I could not find anything on the Internet.

    So, I sent an email to the contact address on the company's web site on Saturday evening. On sunday morning, I had an email reply from the president of Silver Circle Audio in Houston, who sent me the one-page sheet that provides all the instructions you need.

    But, the interesting thing is that he recommended -- without my asking him anything about upgrades or mods -- upgrading the stock fuses to the HiFi Tuning Supremes. He said, about the HiFi Tuning fuses that are available, "Any of those will be an improvement over the stock fuses" and that they put them in their Tchaik 6 model.

    I was looking for any experience others have had with these fuses. For $84.95 per fuse, it is not an easy decision to order them just to experiment.

    Any comments? Thanks.
    Last edited by Moose68Bash; 03-14-2013 at 04:55 PM.
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    OH GREAT!!! A new rabbit hole i havent fallen into yet. LOL
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    Quote Originally Posted by soundfreak1 View Post
    OH GREAT!!! A new rabbit hole i havent fallen into yet. LOL
    "OH GREAT!!!" or "OH MY GOD!!!" -- as Hamlet said, "That is the question."

    Just think, we may have vigorous debate about fuses as well as about cables!
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    Quote Originally Posted by Moose68Bash View Post
    "OH GREAT!!!" or "OH MY GOD!!!" -- as Hamlet said, "That is the question."

    Just think, we may have vigorous debate about fuses as well as about cables!
    That could prove dangerious. And funny.
    Main Rig:
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    Into JBL L123 drivers
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    Quote Originally Posted by Moose68Bash View Post
    But, the interesting thing is that he recommended -- without my asking him anything about upgrades or mods -- upgrading the stock fuses to the HiFi Tuning Supremes. He said, about the HiFi Tuning fuses that are available, "Any of those will be an improvement over the stock fuses" and that they put them in their Tchaik 6 model.

    I was looking for any experience others have had with these fuses. For $84.95 per fuse, it is not an easy decision to order them just to experiment.

    Any comments? Thanks.

    I discussed the use of HiFi Tuning Supreme fuses in my two channel system here

    Discussions of other Hifi Tuning fuses can be found here:

    Studies-On-Residential-Power-Line-Noise-Part-8-Audio-Grade-Fuses-For-Home-Theater

    Studies-On-Residential-Power-Line-Noise-Part-7-HiFi-Tuning-and-Isoclean-Fuses
    Last edited by DarqueKnight; 03-15-2013 at 03:06 AM.
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    I recently upgraded the fuses in all my equipment to some Supreme and some gold Hi-Fi tuning fuses. I won't go into extreme detail as Ray's review is better than mine would ever be. I will say that the difference was very positive regarding tonal properties and imaging. To a lesser extent, the clarity and detail improved as well. This was my experience. BTW, I installed some of the WA quantum fuse chips on the gold Hi-Fi Tuning fuses as well.
    Last edited by headrott; 03-15-2013 at 11:06 AM.
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    A couple of months ago I upgraded my preamp and amp fuses from Isocleans to HiFi Tuning Supreme with the WA quantum chips, and the improvements were like having a new system. I initially tried a fuse in the amp, like what I heard, then bought another for the preamp. The difference in each case was immediately noticeable. I have tried other fuses including the HiFi Tuning gold and silver, and none brought as much improvement as the Supremes. YMMV.
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  30. #30
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    Quote Originally Posted by Glen B View Post
    A couple of months ago I upgraded my preamp and amp fuses from Isocleans to HiFi Tuning Supreme with the WA quantum chips, and the improvements were like having a new system. I initially tried a fuse in the amp, like what I heard, then bought another for the preamp. The difference in each case was immediately noticeable. I have tried other fuses including the HiFi Tuning gold and silver, and none brought as much improvement as the Supremes. YMMV.
    I have tried the Isoclean, Furutech, and Acme's.
    I thought they all sounded better than stock, JMHO.
    YMMV!

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