Nordost QKore grounding unit - Page 5
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  1. #41
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    Re: Nordost QKore grounding unit

    Quote Originally Posted by Kuoppis View Post
    For any of these passive components, I think this is exactly what they do. Nothing less, nothing more. Therefore I presume it improves the sound by way of reducing ground load fluctuations when the signal travels through different components.

    Hence, I bought 10 awg strands of flexible copper wire and a selection of different types of connectors to connect to an idle input of each component. The other end goes to a 5 kg pure copper bar to give them common ground.

    Let’s see what happens .


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    That’ll be interesting, we wait across an ocean and a country


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    Power Conditioning, Filters & Switch: Nordost QRT Power Product Line, Furutech GTX-D NCF/GTX Wall Plate/105D, 20 AMP Dedicated with Surge Protection at Panel, AQVox SE switch
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  3. #42
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    Nordost QKore grounding unit

    My experiment is taking shape with first parts starting to arrive.

    First the grounding core. I think at least Cardas is using solid copper in their power product casings, probably for the same reason. Not sure what is inside a Nordost QKore and what metal they use. It is quite heavy though. But I think it is safe to say it is not a more solid copper core.

    This is a 5 Kg solid copper bar. Looks nnnice to my eyes at least.




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    Big rig: AMG V12 + AMG 12j2 arm + Benz Micro Gullwing SLR MC/ Cardas Clear Beyond Phono/ Stillpoints LPI/ Grandinote Celio/ Aurender N100H with Curious USB/ Synology NAS with Roon and HD Plex linear PSU with Shunyata HD/ AQ Diamond RJ45 + AQ Vodka RJ45 + Aqvox Network Switch SE/ Brinkmann Nyquist MK II/ Ayre KX-5 Twenty/ Soulution 511/ WyWires Platinum ICs + power cables/ Magico S3 mk2/ Inakustik Reference LS 4004 AIR/ REL S5 SHO/ REL Blue/ Audioquest Niagara 5000/ Shunyata AlphaHC (x2)+ Alpha+Alpha Analogue+Alpha Digital/ Finite Elemente Pagode/ Stillpoints Ultra SS.

    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Ayre Codex/ Auralic Aries Mini/ Sbooster LPSU/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

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  4. #43
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    Re: Nordost QKore grounding unit

    Originally Posted by Speedskater
    The basic definition for 'ground' is:
    A common reference point.


    Quote Originally Posted by Kuoppis View Post
    For any of these passive components, I think this is exactly what they do. Nothing less, nothing more. Therefore I presume it improves the sound by way of reducing ground load fluctuations when the signal travels through different components..............
    No actually, just the opposite!
    Many of the passive units have just a single terminal and the ones with more terminals, isolate each terminal internally. So there is no common reference point and no path thru the unit back to the AC power system.

    * * * * * * * * * *
    While the $10 gold grounding block in post #14 would be an excellent 'common reference point' and is the way to go.

  5. #44
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    Re: Nordost QKore grounding unit

    Quote Originally Posted by Speedskater View Post
    Many of the passive units have just a single terminal and the ones with more terminals, isolate each terminal internally. So there is no common reference point and no path thru the unit back to the AC power system.

    * * * * * * * * * *
    While the $10 gold grounding block in post #14 would be an excellent 'common reference point' and is the way to go.
    Now we might be talking different things here. I am referring to the QKore6. It’s a passive unit, no connection to the AC power system whatsoever.

    The $10 grounding block does just what any similar block would do, i.e. provide a common reference point. As does the copper block.


    Sent from my iPad using Tapatalk
    “Life’s too short to listen to bad audio.”

    Big rig: AMG V12 + AMG 12j2 arm + Benz Micro Gullwing SLR MC/ Cardas Clear Beyond Phono/ Stillpoints LPI/ Grandinote Celio/ Aurender N100H with Curious USB/ Synology NAS with Roon and HD Plex linear PSU with Shunyata HD/ AQ Diamond RJ45 + AQ Vodka RJ45 + Aqvox Network Switch SE/ Brinkmann Nyquist MK II/ Ayre KX-5 Twenty/ Soulution 511/ WyWires Platinum ICs + power cables/ Magico S3 mk2/ Inakustik Reference LS 4004 AIR/ REL S5 SHO/ REL Blue/ Audioquest Niagara 5000/ Shunyata AlphaHC (x2)+ Alpha+Alpha Analogue+Alpha Digital/ Finite Elemente Pagode/ Stillpoints Ultra SS.

    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Ayre Codex/ Auralic Aries Mini/ Sbooster LPSU/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

    HP rig: MacBookAir/ Tidal/ Auralic Gemini 2000/ Sbooster LPSU/ Audeze LCD-2 Classic + WyWires Red/ Shunyata HD/ Shunyata Hydra 2/ Shunyata Venom.

  6. #45
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    Re: Nordost QKore grounding unit

    Well the QKore1 obviously doesn't do anything! it only has one terminal.
    Does anyone have access to a QKore6? and be able to measure the resistance from terminal to terminal?

    The Stereophile page has some alternate Universe stuff, don't know if it's from the manufacture.

  7. #46
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    Re: Nordost QKore grounding unit

    So I quickly scanned a Nordost QRT page and it had a ton of alternate universe stuff.
    They start with a few sentences of engineering text then take it out of context and mis-apply it.

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  9. #47
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    Re: Nordost QKore grounding unit

    I have had the chance to try out 2 types of grounding unit something similar to QKore grounding unit. First is from an Indonesian maker his name is Setiawan, its known as GC8 and second is Alan Maher from USA his grounding unit is known as Iso TG.

    For GC8 you can connect that unit to 8 different parts of your equipments (cd player, preamp amp, phono pre and speakers) using either RCA, spade, XLR and i think he makes it even for USB port too. Its an active device meaning you need to hook them to an outlet.

    Here's the link :

    http://www.sap.or.id/GC8_Home.html

    Im still in the midst of trying them out, but so far for now there's some nice improvements im getting lower noise, tighter bass and deeper soundstage. However I find them a bit sterile on the midrange side but its still premature for me to conclude as I got them hooked up only for few days now and there's so many places to try them in my system. I got them in spades and rca version so im slowly trying them at rca output and input for my equipments.

    On the other hand I have had Alan Maher Iso Tg for 3 months now, they are passive devise and can be hooked to only 1 equipment using either RCA, XLR and spade. I got them in RCA version. Now the Iso TG has only given me good positive results in my system. Amazing resolution, lower noise floor, expansive sound stage, superb bass detail and extension. The midrange some what more liquid sounding and highs are more detailed. Im trying to find the right words for them so hopefully it makes sense lol.

    Either way these grounding devices are giving me nice improvements for my setup. As for the price GC8 is going for $275 per unit (this is what attracted me immediately) and Iso TG is going for $950.

    Another one to check out is RTZ grounding box. I haven't tried them, only have been reading about them and been reading good positive reviews on them in another forum.

    Heres the link

    http://theaudiostandard.net/thread/4...-grounding-box.

    There many grounding units coming out from many companies and individuals. Making it an interesting topic to look at in this hobby .

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  11. #48
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    Re: Nordost QKore grounding unit

    Quote Originally Posted by tjbhuler View Post
    I have had the chance to try out 2 types of grounding unit something similar to QKore grounding unit. First is from an Indonesian maker his name is Setiawan, its known as GC8 and second is Alan Maher from USA his grounding unit is known as Iso TG.

    For GC8 you can connect that unit to 8 different parts of your equipments (cd player, preamp amp, phono pre and speakers) using either RCA, spade, XLR and i think he makes it even for USB port too. .

    Not familiar with either brand, but in either case do not try to ground your speakers!


    Sent from my iPhone using Tapatalk Pro
    Power Conditioning, Filters & Switch: Nordost QRT Power Product Line, Furutech GTX-D NCF/GTX Wall Plate/105D, 20 AMP Dedicated with Surge Protection at Panel, AQVox SE switch
    Cables, Isolation, Room Treatment: Nordost Supreme Reference (Odin) Distribution, Reference Line (Valhalla 2) Components and Speakers, HRS M3X Platforms & Damping Plates. Stillpoint’s Ultra 6/SS and Vicoustic Room Treatments
    Power & Sound: D’Agostino Pre-Amplifier to D’Agostino Momentum Mono’s driving Wilson Alexia’s
    Source: Aurender N10, Brinkmann Nyquist MKII

  12. #49
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    Re: Nordost QKore grounding unit

    I'm not at all sure what the Setiawan does!
    He writes about correcting voltage at a point. But voltage doesn't exist at at point. It's the difference in potential between two points.
    So if the common reference point is one of the points, what is the other point.
    And in and near AC power systems, it's current flow from point to point that creates the voltage drop.

  13. #50
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    Re: Nordost QKore grounding unit

    Quote Originally Posted by UltraFast69 View Post
    Not familiar with either brand, but in either case do not try to ground your speakers!
    and don't ground RCA chassis connectors that have plastic insulator rings.
    and don't ground a double insulated chassis. It would have a square within a square safety symbol.

 

 
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