May 10th, 2020, 12:43 pm
May 10th, 2020, 1:19 pm
tomp wrote:I could not find the original post on DAC generated noise but I was using a USB DAC with my laptop to feed an amp with unbalanced inputs. The PC noise was filtered to ground by the power supply internal noise filter and was picked up by outer shell of the amplifier inputs. When I put a cheater on the PC power supply the noise went away. Note that this was not AC hum but higher frequency switching noise. But it did illustrate that a noise filter in one component can put out various kinds of noise on the ground line.
Above all, remember that using a cheater can be fatal if you get a fault from line to chassis in one of the components and then come in contact with something that is grounded. Definitely can ruin your day.
May 10th, 2020, 2:35 pm
Pelliott321 wrote:....I did try my cart monopoly blocks and hum was there.
May 10th, 2020, 2:57 pm