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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.

Post Subject: BuzzPosted by maxzimum on: 4/30/2010

Hi Paul,

It's more a buzz than a hum. It buzzes when I put either amp on. ie: at ~30% load. I have not tried other loads since I don't know what would be a appropriate load to test it with other than audio equipment, of which I have nothing other than what's connected.

The noise is from within the unit itself and not from the speakers.

I have a dedicated ground for my setup. It is a copper rod that goes about 60' into the ground and has been made taking all considerations. We have a high water table in the area, hence the soil is always moist. This ground is tied with the common house ground at the mains (have tried it both ways). The Neutral to Ground Voltage at the setup is <3V (I have 220-230V supply). I have a dedicated circuit from the mains for my audio. I also have a captive diesel generator (we have frequent power cuts) and the hum/buzz is audible when using the generator too.

I am trying to determine whether its a problem with my Amplifier power supply or something else.

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