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Thread: What constitutes a grounding box?

  1. #41
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    I would hardly call a rise of up to 40db in the noise floor, no matter how far down, not a massive amount. Personally, I don’t like listening to noise and seek to reduce it where possible but each to their own.
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  2. #42
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    Quote Originally Posted by Berni217 View Post
    ... because you trust any said independent reviews written on the net!? I only trust my judgment and my ears!


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    Not trusting anything, just discussing how the thing measured and extrapolating from that. I'm not saying it does not have any effect on the sound, It may do, I don't know as I have not heard one. I'm wondering how it might cause that effect based on the information available about it.
    Martin



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  3. #43
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    Quote Originally Posted by NRG View Post
    I would hardly call a rise of up to 40db in the noise floor, no matter how far down, not a massive amount. Personally, I don’t like listening to noise and seek to reduce it where possible but each to their own.
    That's with a 2 metre cable, with a 6 inch cable it was just a couple of dB.
    Martin



    Current Lash Up:

    Technics SLP1200 CD Player * Nelson Pass DCB1 Pre amp / Krell KSA50S Power amp * JM Lab Electra 926 loudspeakers *


    'You fool! To think that your ape-brain could contain the full knowledge of the Krell!'

  4. #44
    Join Date: Feb 2013

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    you can get them for 75 quid, so not the earth and moon to try. rave about its qualities for a while then sell it on.
    Regards,
    Grant ....

    I've said it before and I'll say it again: democracy simply-doesn't-work
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  5. #45
    Join Date: Apr 2012

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    One could go the whole hog (well most of it) and complement the grounding box with a couple of Hallographs from Shakti.

    http://www.shakti-innovations.com/hallograph.htm

    Even throw in a couple of Shakti stones for good measure.
    As Wernher Von Braun said, "it's not rocket science!".

  6. #46
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    From Simon;

    "I think the point is that the boxes aren't connected to ground, they're just connected to the hfi, so all they do is potentially spray, very, very small ground currents all over the place.

    But the wire is connected to the equipment - surely the equipment's earth?

  7. #47
    Join Date: Nov 2008

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    Quote Originally Posted by Pharos View Post
    But the wire is connected to the equipment - surely the equipment's earth?
    In many cases no it isn't - such equipment is usually compliant with the class 2 electrical regs.
    Chris



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  8. #48
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    Yes, one or more wires from the box will be connected to one of many different ground points on the equipment, potentially a chassis earth, or maybe a signal cold, or maybe a signal 0v in case of an XLR socket. The point is that all of this different physical locations on different pieces of your hifi are all at different voltages. There is no such thing as ground/earth, it's a misnomer. Small currents flow all over your hifi across these various gnd planes and all of them are looking for the lowest impedance route back to earth, they're all ultimately looking to get back to the wall socket via that green and yellow wire in the mains plug. Adding extra lengths of cable just helps to pick up radiated noise from the environment, from adjacent wires, from routers and home plugs and overhead power lines and everything else. All these boxes do is build a haphazard aerial in the room and act as a source to receive noise which is then sprayed into all the connected hifi. It's just another loop to radiate and receive noise.

    It's not a method for providing the lowest possible impedance route back to the main power earth for all current flowing on any ground plane and across any component chassis, it's the exact opposite of that in fact.
    Kuzma Stabi/S 12", (LP12-bastard) DC motor and optical tacho psu, Benz LP, Paradise (phonostage). MB-Pro, Brooklyn dac and psu, Bruno Putzeys balanced pre, mod86p dual mono amps, Yamaha NS1000m

  9. #49
    Join Date: Feb 2013

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    one i saw had a mains plug and a single wire, presumably from the earth pin going to an rca plug. box had an rca socket on one side. supposedly had tourmaline inside that you had to level after shipping. I take it it had rca's on another side for grounding your equipment but cant be sure.
    Regards,
    Grant ....

    I've said it before and I'll say it again: democracy simply-doesn't-work
    .... ..... ...... ...... ................... ..... ..... ..... ..... .....
    OPPO BDP-103D DARBEE - JBE SERIES 3/B&O SP1 - QUAD VENA 2/TWIN PRO MONOBLOCK POWER AMPLIFIERS - AVANTREE OASIS PLUS + LEAF HD BLUETOOTHS - OPPO PM-3 PLANAR +NURAPHONE HEADPHONES - ZBOOK/WIN10 PRO/AUDIRVANA 3 PLUS/TIDAL - SMSL M6 MINIDAC - RPI 3 IQDIGI/VOLUMIO - FULL RANGE TWIN TELEFUNKEN MAIN SPKRS/Q ACOUSTIC BT3 ACTIVES & CANTON SUB - P.INSPIRED MAINS REGENERATED.

    **Men are not punished for their sins, but by them**

  10. #50
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    Quote Originally Posted by Macca View Post
    That's with a 2 metre cable, with a 6 inch cable it was just a couple of dB.
    The manual states 15cm is the minimum distance and to place the unit at the bottom of the rack, if I had one Id need at least 1~1.5m as my rack is full and the unit would have to sit a way from it which I suspect would be the situation in a lot of cases.
    Listening in a Foo free Zone...

    Only a Sith deals in absolutes.

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