My home-made signal grounding system

[damacman]

This just in - connecting an RCA (or XLR) cable between two audio components ties the signal ground together between them.

[Puma Cat]

Originally Posted by damacman

This just in - connecting an RCA (or XLR) cable between two audio components ties the signal ground together between them.

Yes, that is correct; that will work, too. In my case, though, I only have two unused RCA jacks on the preamp, so for more than two components, the bolt will be a better solution.

I've named it...Usain.

[damacman]

Originally Posted by Puma Cat

Yes, that is correct; that will work, too. In my case, though, I only have two unused RCA jacks on the preamp, so for more than two components, the bolt will be a better solution.

I've named it...Usain.

Uh ... the preamp is the point of commonality for the signal grounds of all interconnected sources, signal processors, and amplifiers. Otherwise it would not be possible for the amplifier to amplify a chosen source.

They are after all laws of physics, not just really good ideas.

[Puma Cat]

Originally Posted by SCAudiophile

I have been testing Signal Grounding as well over past 1.5 weeks as a separate improvement over and above all the chassis grounding I have used for almost 13 years.

Signal grounding performance/audible benefit has been a big surprise and a big performance uptick!

More testing and listening next week!

Yup...right there with ya, Mark.

[Puma Cat]

Originally Posted by damacman

Uh ... the preamp is the point of commonality for the signal grounds of all interconnected sources, signal processors, and amplifiers. Otherwise it would not be possible for the amplifier to amplify a chosen source.

They are after all laws of physics, not just really good ideas.

[SCAudiophile]

Originally Posted by damacman

This just in - connecting an RCA (or XLR) cable between two audio components ties the signal ground together between them.

Absolutley true...does not however take care of noise from unused inputs and outputs. Signal grounding those I think is they key as that noise can be shunted away and dealt with if someone would build a device to do this.

This is true BTW even for components where you can mute unused inputs and outputs. Generally even with Esoteric, when muted, that's taking care of the negative and positive...the ground is not muted.

[Puma Cat]

Originally Posted by SCAudiophile

Absolutley true...does not however take care of noise from unused inputs and outputs. Signal grounding those I think is they key as that noise can be shunted away and dealt with if someone would build a device to do this.

This is true BTW even for components where you can mute unused inputs and outputs. Generally even with Esoteric, when muted, that's taking care of the negative and positive...the ground is not muted.

[damacman]

Originally Posted by SCAudiophile

Absolutley true...does not however take care of noise from unused inputs and outputs. Signal grounding those I think is they key as that noise can be shunted away and dealt with if someone would build a device to do this.

This is true BTW even for components where you can mute unused inputs and outputs. Generally even with Esoteric, when muted, that's taking care of the negative and positive...the ground is not muted.

This "tweak" has been around for a bit in audiophile circles. Previously, shorting plugs (which overzealous enthusiasts oft plugged into outputs as well) were recommended to shunt noise from unused inputs. [Such devices do have a place on unused phono inputs on some preamps (mostly vintage) but for a slightly different reason.]

To that I suggest if your preamp provides a path for a micro-signal present at a non-selected unused input to reach the signal path of the selected input, you may need a better preamp. It's one thing to have a tuner on and hear a little crosstalk when using the phono input (very high gain) at high volume settings but to suggest that residual noise measured in microvolts at a non-selected input could somehow pollute the signal from the selected source is a stretch.

I'm no fun. I know.

[SCAudiophile]

Originally Posted by damacman

This "tweak" has been around for a bit in audiophile circles. Previously, shorting plugs (which overzealous enthusiasts oft plugged into outputs as well) were recommended to shunt noise from unused inputs. [Such devices do have a place on unused phono inputs on some preamps (mostly vintage) but for a slightly different reason.]

To that I suggest if your preamp provides a path for a micro-signal present at a non-selected unused input to reach the signal path of the selected input, you may need a better preamp. It's one thing to have a tuner on and hear a little crosstalk when using the phono input (very high gain) at high volume settings but to suggest that residual noise measured in microvolts at a non-selected input could somehow pollute the signal from the selected source is a stretch.

I'm no fun. I know.

I started out a believer in chassis ground only and somewhat skeptical on this for the same reasons you have mentioned in both posts. It does seem to work....

[Weirdcuba]

Won’t I just short everything out?