ricecrispies
Member
I've done a lot more testing today. I have put my multimeter between a USB port on the computer and a ground pin on a power bar and got a reading of around 2 ohms. And I have done the same thing with the outer casing of my bass amp and got roughly the same resistance.
I have tried connecting everything through a different wall socket but it makes no difference.
As I said in my previous post, I have put my (schuko) socket tester both ways up in a schuko to type E adapter, and got a reading of "live neutral reverse". I get "live neutral reverse" when I place the socket tester in every wall socket in the apartment.
I have tried connecting the bass amp and bass to the computer via my DI box while disconnecting everything else on the computer that connects to a device that is powered from a wall socket, including the HDMI cable, speaker cables, ethernet cable, and every USB cable except that for the 2i2, but I still get computer sounds loudly through both the bass amp's speaker and the headphones that are plugged into the 2i2.
If I just plug a guitar and nothing else into one of the 2i2's inputs, select instrument-level input, and turn the input gain up to full, I hear a prominent 50Hz hum.
I have tried connecting everything through a different wall socket but it makes no difference.
As I said in my previous post, I have put my (schuko) socket tester both ways up in a schuko to type E adapter, and got a reading of "live neutral reverse". I get "live neutral reverse" when I place the socket tester in every wall socket in the apartment.
I have tried connecting the bass amp and bass to the computer via my DI box while disconnecting everything else on the computer that connects to a device that is powered from a wall socket, including the HDMI cable, speaker cables, ethernet cable, and every USB cable except that for the 2i2, but I still get computer sounds loudly through both the bass amp's speaker and the headphones that are plugged into the 2i2.
If I just plug a guitar and nothing else into one of the 2i2's inputs, select instrument-level input, and turn the input gain up to full, I hear a prominent 50Hz hum.