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So I want to give it a try. Was reading the other posts and one recommendation is to connect it to the chassis rather than an RCA input.
My preamp has a grounding post. So I floated the ground wire of the preamp's power cord, and ran a ground wire from the post to the screw on the AC outlet. This eliminated a faint buzz emanating from the speakers.
My question is can I put the BGT to the same grounding post that is grounded to the outlet? Seeing the ground and the neutral are connected in the AC wiring this makes me a little nervous for some reason.
Follow Ups:
So I want to give it a try. Was reading the other posts and one recommendation is to connect it to the chassis rather than an RCA input.
In the majority of cases the outer RCA jack shell/signal ground is connected to the chassis of the equipment. How that is accomplished by the designer of the equipment can vary. Example, in the design of the ARC VT50 power amp the signal ground/B- power supply bus is connected to the metal chassis of the amp through a 1/4 watt 10 ohm resistor. Could just the resistance of the 10 ohm resistor alter the effect of the BGT tweak?
My preamp has a grounding post. So I floated the ground wire of the preamp's power cord, and ran a ground wire from the post to the screw on the AC outlet,
What does that have to do with the BGT tweak device? My understanding of the BGT device is it has nothing to do with the actual safety equipment earth ground.
and ran a ground wire from the post to the screw on the AC outlet.
screw ? what screw? The little 6/32 screw in the center of the duplex receptacle that is there to fasten the cover plate to the receptacle?
My question is can I put the BGT to the same grounding post that is grounded to the outlet?
Apples and oranges. The BGT tweak is one thing and the chassis being connected to the safety equipment ground at the wall receptacle is another.
Hook back up the safety equipment ground from the power cord to the chassis of the preamp as it should be. If you did hear a difference from the preamp with the ground wire inside the power cord compared to an external ground wire ran outside the cord that could be the way the ground wire inside the power was ran inside the power cord. It could be picking up induced voltage from the Hot conductor inside the cord. You could try a different designed power cord. At any rate what you are experiencing with the safety equipment ground wire from the chassis to the safety equipment ground wire inside the receptacle wall box has nothing to do with the BGT tweak device.
Seeing the ground and the neutral are connected in the AC wiring this makes me a little nervous for some reason.
They are not same and have two entirely different functions.
The neutral, 'The Grounded Conductor', is a current carrying conductor. It is part of the power circuit.
The safety equipment ground, 'The Grounding Conductor', is used to provide a low resistive path for ground fault current to return to the source, the electrical panel, in the event of a ground fault event/condition.
This is accomplished by connecting the branch circuit safety equipment grounding conductor, that is connected to the U shaped ground terminal of the wall receptacle, to the main electrical service neutral conductor.
This is the only point where the branch circuit safety equipment grounding conductor and neutral conductor of a branch are connected together.
Thanks for the responses. I've read in other posts that floating the power cord ground wire, then replacing it with an external ground wire from the chassis still grounds the chassis the same way, just in a star type configuration, whereby its ground is at the wall before all the other grounds in the line conditioner.
The little screw in the faceplate is mechanically connected to the green ground wire of the outlet.
What this has to do with the BGT is: will the bgt effect actually affect the audio circuit or just be shunted to ground.
My guess is it will still be effective, as it seems to "charge" the whole ground circuit. All other components have chassis ground as well, just my preamp does it through an external wire.
Edits: 01/30/16
I've read in other posts that floating the power cord ground wire, then replacing it with an external ground wire from the chassis still grounds the chassis the same way, just in a star type configuration, whereby its ground is at the wall before all the other grounds in the line conditioner.I see no difference. Other than the example I gave about the ground wire in you power cord being corrupted by induced voltage from the hot conductor inside the power cord. Is your power cord a home brew or an OEM? Usually the construction of an OEM 3 wire power cord cancels out any chance of the hot conductor inducing a voltage onto the safety equipment grounding conductor, wire.
The little screw in the faceplate is mechanically connected to the green ground wire of the outlet.
Correct but is not designed by the manufacture of the receptacle to be used as making a good solid connection to the equipment grounding conductor of the in wall branch circuit wiring equipment ground wire. The U shaped equipment ground contact of the receptacle is designed and manufactured to carry the full ground fault current in the event of a ground fault event/condition through the metal back strap of the receptacle to the green ground lug screw connection where the branch circuit safety equipment wire is connected.Food for thought, for a typical 20 amp branch circuit in the event of a dead short ground fault condition, where the hot comes into contact with the safety equipment grounding conductor or the metal enclosure the ground wire is connected to, well over 100 amps could travel in the ground fault circuit before, hopefully, the 20 amp breaker protecting the branch circuit trips open. How well will your equipment ground connection to the 6/32 trim screw hold up?
What this has to do with the BGT is: will the bgt effect actually affect the audio circuit or just be shunted to ground.
Has absolutely nothing to do with the safety equipment ground. The BGT tweak does not use or need a safety equipment ground to do what it does. If it did how would it work on a piece of equipment that doesn't use the safety equipment ground?
My guess is it will still be effective, as it seems to "charge" the whole ground circuit. All other components have chassis ground as well, just my preamp does it through an external wire.
My understanding of the BGT tweak it does what it does to the signal ground of the piece of audio equipment. I has nothing to do with the safety equipment ground of the branch circuit.
I wish the guy that stumbled/come up with the tweak would have never used the word ground in naming his tweak. (Sorry I use to know the guy's name. For some reason I think his first name is Bud.)
Edits: 02/02/16
Ok, so I'll connect the BGT to signal ground rather than chassis ground.
The PC with the lifted ground is a triode wire labs running to the preamp.So then, the ground post on the preamp is provided for what purpose?
Edits: 01/30/16 02/09/16
So then, the ground post on the preamp is provided for what purpose?
If the preamp has an internal/onboard phono preamp the ground terminal is used to connect the ground wire from a turntable.
A 2 wire power cord and plug preamp with an onboard phono preamp also has a ground terminal for the turntable ground wire to connect to. The signal ground of the preamp is connected to the metal chassis of the unit.
"Seeing the ground and the neutral are connected in the AC wiring this makes me a little nervous for some reason."
You should be. Unless you REALLY know what your doing with the electrical system in your house, leave it alone. What you probably have, as you demonstrated is a problem with the grounding scheme in you amp. Unplug your amp and check all grounding connections are tight and solder joints are good. Unfortunately grounding issues can be a bear to isolate and trouble shoot.
Leave the power cord alone, it's for your own good. I'd hate to hear you were put in harms way.
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