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01-04-2022, 12:46 AM
Hi JP
Maybe some definitions are required:
circuit ground: In your drawing this would be label as "ground speaker out". All of that ground wiring floats and is tied to chassis via the ground link isolator, which you have drawn correctly but connected backwards
chassis ground: This is labelled as "power ground" in your schemo but it should NOT be the same tie point as used for the AC safety ground, which is also chassis.
The XLR pin-1 should tie directly to chassis. I use XLRs that make this connection through one of the mounting bolts. Other XLRs require a separate connection.
So, to correct your drawing, move the "GNDPWR" symbol to the other end of the ground-link-isolator, then tie the freed end to the speaker ground (electronically, not literally). The tie point should be as described here and in TUT3.
Happy New Year
Maybe some definitions are required:
circuit ground: In your drawing this would be label as "ground speaker out". All of that ground wiring floats and is tied to chassis via the ground link isolator, which you have drawn correctly but connected backwards
chassis ground: This is labelled as "power ground" in your schemo but it should NOT be the same tie point as used for the AC safety ground, which is also chassis.
The XLR pin-1 should tie directly to chassis. I use XLRs that make this connection through one of the mounting bolts. Other XLRs require a separate connection.
So, to correct your drawing, move the "GNDPWR" symbol to the other end of the ground-link-isolator, then tie the freed end to the speaker ground (electronically, not literally). The tie point should be as described here and in TUT3.
Happy New Year
