Good day! I have two boxes for my project; the first is for the amps, volume control, in/out, both channels.
The second is for the psu/bridge rectifiers ( some suggest placing
the bridges in amp box?) Will be using xlr's to connect. (NOW?)
For the grounding between the boxs. Any suggestions for this?
larryg
The second is for the psu/bridge rectifiers ( some suggest placing
the bridges in amp box?) Will be using xlr's to connect. (NOW?)
For the grounding between the boxs. Any suggestions for this?
larryg
Hi,
the first box containing the transformer is mains powered. It must have a safety earth.
The second box is not mains powered. Can you guarantee that your construction will never introduce the risk of mains appearing on/in the second box? If yes then you do not need a safety earth. If you are in any doubt then be safe put in a safety earth. Do not connect any of the safety earths to audio ground.
The wires coming from the PSU box to the Amplifier box do not contain any grounds. I can hear you asking "has this guy gone crackers".
The PSU wires are +ve supply, 0volt supply and -ve supply. You can call the 0volt supply the PSU common if you prefer. BUT IT IS NOT a ground.
If you can get your head to think in this direction you are less likely to make a grounding error that will afflict your amp with hum.
the first box containing the transformer is mains powered. It must have a safety earth.
The second box is not mains powered. Can you guarantee that your construction will never introduce the risk of mains appearing on/in the second box? If yes then you do not need a safety earth. If you are in any doubt then be safe put in a safety earth. Do not connect any of the safety earths to audio ground.
The wires coming from the PSU box to the Amplifier box do not contain any grounds. I can hear you asking "has this guy gone crackers".
The PSU wires are +ve supply, 0volt supply and -ve supply. You can call the 0volt supply the PSU common if you prefer. BUT IT IS NOT a ground.
If you can get your head to think in this direction you are less likely to make a grounding error that will afflict your amp with hum.
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