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Thread: Quantum Science fuses.

  1. #41
    Join Date: Dec 2011

    Location: sussex

    Posts: 368
    I'm phil.

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    Something I want to look into after some advise on where to start with fuses, amp gryphon, Sacd bel canto.
    Modded td160 super Thorens ol encounter arm hana sl cart, angle audio studio pro mc virtual battery phono amp with separate psi, Onix pre and mono amps, Onix CD player, Onix BWD and soap tuner. B&W dm2 speakers or super pencil 12 speakers, atlas cables, seperate mains power supply with earth spike.

  2. #42
    Join Date: May 2012

    Location: Toulouse, France

    Posts: 6,562
    I'm Kevin.

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    Quote Originally Posted by Gazjam View Post

    Improvement is repeatable and easily demonstrated, its a genuine THING - but again system dependent.
    If it was repeatable and easily demonstrated, would it not work on any system?
    What are the reasons why it would not work?
    Kevin

    Too busy enjoying the music....

    European loan coordinator for Graham Slee HiFi system components..

  3. #43
    Join Date: Mar 2017

    Location: Seaford UK

    Posts: 1,861
    I'm Dennis.

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    Quote Originally Posted by Barry View Post
    How is the neutral connected to earth?
    With a very thick metal block on the consumer unit.

  4. #44
    Join Date: Jan 2009

    Location: Essex

    Posts: 31,850
    I'm openingabottleofwine.

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    Quote Originally Posted by Pharos View Post
    With a very thick metal block on the consumer unit.
    Sounds like you have a TN-C-S arrangement.

    https://electricalapprentice.co.uk/a...g-and-bonding/
    Barry

  5. #45
    Join Date: Jan 2009

    Location: Essex

    Posts: 31,850
    I'm openingabottleofwine.

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    Quote Originally Posted by Gazjam View Post
    Lots of FUD flying around from folks that's never actually tried them...
    Seems to be the way, is what it is.

    After I had my hardwired balanced mains unit installed years back,
    any thoughts pointing to "its just electricity, whats the beef?" rapidly dissolved.
    Hence my (as it turns out happy) experimentation with better fuses.

    My take?
    They work, brilliantly,
    but its system (not ear/brain interface) dependent.

    Improvement is repeatable and easily demonstrated, its a genuine THING - but again system dependent.

    Defo worth a subjective punt in your own system?
    Price of entry is 50 quid on a Hifi Tuning Supreme 3 13A fuse.
    In my experience, I wouldn't go any lower.

    Too spicy?
    Stay with the Bussmans and be happy.
    Buy more music instead.
    If you have a balanced mains supply (presumably by using a 1:1 transformer with a centre tapped secondary), you have two 'live' or phase lines feeding your gear. Therefore the balanced secondary need to protected by two fuses, or a ganged RCB.

    Therefore the minimum cost of entry is £100. And unless the fuses are marked and conform to BS1362, and a fault occurs which damages your gear, your household contents insurance will be invalid.
    Barry

  6. #46
    Join Date: Oct 2008

    Location: Glasgowshire

    Posts: 9,656
    I'm Gary.

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    Quote Originally Posted by CageyH View Post
    If it was repeatable and easily demonstrated, would it not work on any system?
    What are the reasons why it would not work?
    Off top of my head:

    System not transparent enough to show difference?
    Bigger issues in system than dirty mains?
    AC POWER
    Hardwired 10kVA balanced mains powering entire system
    AMPS
    Meridian 557 power Amp (Modded) / PS Audio BHK Preamp (Modded)
    SPEAKERS
    Wharfedale Evo 4.4
    DAC
    PS Audio Directstream (Modded)
    TURNTABLE
    Pro-Ject X8 balanced output via XLR / Ortofon Quintet Blue cartridge
    PHONOSTAGE
    Pro-Ject DS3 B balanced Input (TT and Phonostage powered by Pro-Ject Power box RS2 linear psu)
    DIGITAL
    OPPO 203 (Modded: Linear PSU, i2s output to Dac) - Roon Endpoint, HDMI input used for all things Streaming/ PS5 /AppleTV ... also good for movies apparently?
    MUSIC PLAYBACK
    Tweaked AP-Linux based Roon Server into Oppo 203 as Roon endpoint
    Ipad Roon Remote.
    Apple Music/ YouTube via AppleTV, fed to Dac via Oppo HDMI input/i2s output to Dac.
    SPEAKER CABLES
    Biwired: Duelund DCA10GA (Bass) Duelund DCA16GA (mid & treble) Duelund 12DCA used as jumpers (On
    "Blackcat Cable" Chris Sommivigo's advice - yup, even with biwire it sounds better - and it does)
    INTERCONNECTS
    All Balanced: Ghost+ recording studio XLR cables

  7. #47
    Join Date: Oct 2008

    Location: Glasgowshire

    Posts: 9,656
    I'm Gary.

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    My BMU has dual pole RCBO's fitted on Primary and secondaries, so safety and regs wise, all good.

    I wouldn't recommend anything else with a balanced setup, especially not "normal" fuses.
    Not sure it works that way anyway.

    But for a normal 13A mains fuse, on a distribution block for example,
    You'd only need 1 fuse.




    Quote Originally Posted by Barry View Post
    If you have a balanced mains supply (presumably by using a 1:1 transformer with a centre tapped secondary), you have two 'live' or phase lines feeding your gear. Therefore the balanced secondary need to protected by two fuses, or a ganged RCB.

    Therefore the minimum cost of entry is £100. And unless the fuses are marked and conform to BS1362, and a fault occurs which damages your gear, your household contents insurance will be invalid.
    AC POWER
    Hardwired 10kVA balanced mains powering entire system
    AMPS
    Meridian 557 power Amp (Modded) / PS Audio BHK Preamp (Modded)
    SPEAKERS
    Wharfedale Evo 4.4
    DAC
    PS Audio Directstream (Modded)
    TURNTABLE
    Pro-Ject X8 balanced output via XLR / Ortofon Quintet Blue cartridge
    PHONOSTAGE
    Pro-Ject DS3 B balanced Input (TT and Phonostage powered by Pro-Ject Power box RS2 linear psu)
    DIGITAL
    OPPO 203 (Modded: Linear PSU, i2s output to Dac) - Roon Endpoint, HDMI input used for all things Streaming/ PS5 /AppleTV ... also good for movies apparently?
    MUSIC PLAYBACK
    Tweaked AP-Linux based Roon Server into Oppo 203 as Roon endpoint
    Ipad Roon Remote.
    Apple Music/ YouTube via AppleTV, fed to Dac via Oppo HDMI input/i2s output to Dac.
    SPEAKER CABLES
    Biwired: Duelund DCA10GA (Bass) Duelund DCA16GA (mid & treble) Duelund 12DCA used as jumpers (On
    "Blackcat Cable" Chris Sommivigo's advice - yup, even with biwire it sounds better - and it does)
    INTERCONNECTS
    All Balanced: Ghost+ recording studio XLR cables

  8. #48
    Join Date: Jan 2009

    Location: Essex

    Posts: 31,850
    I'm openingabottleofwine.

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    Fair enough, but my comments concerning possible household contents insurance still apply. Insurance companies will do anything to limit any claim, and if a fire was caused and any fuse in your system did not conform to BS1362, I wouldn't be surprised if they rejected the claim.
    Barry

  9. #49
    Join Date: May 2012

    Location: Toulouse, France

    Posts: 6,562
    I'm Kevin.

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    Quote Originally Posted by Gazjam View Post
    System not transparent enough to show difference?
    Oh, that old chestnut.

    I think my system is pretty "transparent", but I don't feel the need to try a directional fuse in an AC mains supply.

    The blurb says it is directional, so it is only better 50% of the time?

    (The real reason is I can't use mains plugs fuses, as they don't fit).
    As for equipment fuses, I am not sure, I am still undecided if I spend the money on fuses, or a Benchmark preamp to drive my Mod 686.
    Kevin

    Too busy enjoying the music....

    European loan coordinator for Graham Slee HiFi system components..

  10. #50
    Join Date: Jan 2009

    Location: Essex

    Posts: 31,850
    I'm openingabottleofwine.

    Default

    Quote Originally Posted by CageyH View Post
    Oh, that old chestnut.

    I think my system is pretty "transparent", but I don't feel the need to try a directional fuse in an AC mains supply.

    The blurb says it is directional, so it is only better 50% of the time?

    (The real reason is I can't use mains plugs fuses, as they don't fit).
    As for equipment fuses, I am not sure, I am still undecided if I spend the money on fuses, or a Benchmark preamp to drive my Mod 686.
    The same argument applies to "directional cables", especially speaker cables. (However so-called semi-balanced signal cables are directional.)
    Barry

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