I am building the Neurochrome 686 power amp and using "Eliott's Sound Products" suggestion of a ground loop breaker as described in section 9 of his following document:
https://sound-au.com/earthing.htm
I will make the lifter switchable in & out by a link, in case I may not need it, which I will obviously not know until the build is complete.
The amplifier build documentation mandates that the XLR input pin 1 must be connected to the ground. I just want to make sure that by 'ground', I am presuming it is meant to be connected to the zero volt line of the power supply and NOT the chassis ground on the OTHER side of the lifter circuit.
Am I correct or not ?
Thanks
https://sound-au.com/earthing.htm
I will make the lifter switchable in & out by a link, in case I may not need it, which I will obviously not know until the build is complete.
The amplifier build documentation mandates that the XLR input pin 1 must be connected to the ground. I just want to make sure that by 'ground', I am presuming it is meant to be connected to the zero volt line of the power supply and NOT the chassis ground on the OTHER side of the lifter circuit.
Am I correct or not ?
Thanks
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Pin 1 connects to the chassis ground and that is earthed, at all times. The Chassis ground is usually connected to the power supply common either with a resistor/diode combination, resistor/capacitor or direct connection.
Pin 2 is hot and pin 3 is cold.
XLR is for balanced line so no 'ground loop breaker' is required because there isn't a ground loop.
Pin 2 is hot and pin 3 is cold.
XLR is for balanced line so no 'ground loop breaker' is required because there isn't a ground loop.
But in case that I have balanced and unbalanced connections? What I would do with the XLR pin 1 and chassis connection? leave it unconnected?
In a balanced to unbalanced line;
Pin 1 goes to the shield, Pin 2 tip and pin 3 ring or no connection, for balanced to unbalanced; (XLR to mono jack).
Pin 1 goes to the shield, Pin 2 tip and pin 3 ring or no connection, for balanced to unbalanced; (XLR to mono jack).
No. I'm refereing a device with both connectors attached to chassis. RCA would be issolated from chassis, and the XLR?
With all due respect, you need to read more about connectors and how they are wired.
Seems like you are trying to hijack this post.
For your information, RCA or commonly known in the Hi Fi world as Phono Jacks are not isolated, unless they are mounted in an isolated base.
Seems like you are trying to hijack this post.
For your information, RCA or commonly known in the Hi Fi world as Phono Jacks are not isolated, unless they are mounted in an isolated base.
No! I don't hijack this post. And I need to read more, of corse.
But here:
https://sound-au.com/earthing.htm#s9
says:
When a loop breaker is used, it is vitally important that all input and output connectors are insulated from the case. If not, they will instantly defeat the loop breaker by providing a direct connection from the zero Volt point to chassis, and no benefit is obtained.
My question is: if this chassis have XLR connectors and RCA. how do they have to be wired the XLR? if SBL needs completly isolated connectors from chassis?
Seems obvius for you, but for me no. Trust me.
Again... I'm just try to learn.
Okey. I have answered my self... sorry.
If I tie pin 1 with shield of the xlr, there is no connection to signal gnd.
If I tie pin 1 with shield of the xlr, there is no connection to signal gnd.