Hi, Everyone.
I don't expect magic, but maybe the community here can give me some troubleshooting steps to fix a hum. It's going to be hard because both of these were built custom.
I have a Solid State Phono Preamp going to a Solid State Amp, When I turn the gain all of the way up, I get a low hum. It's no where near at the listening level and you have to have your ear against the speaker to hear it, but since I did wire these myself, I'd like to see if I can find the source and correct here. Here are the scenarios.
1: With the Amp ON, and no input connected to the RCA input, there is no hum.
2: With the Amp ON and the Phono Amp ON, and the input connected to the RCA in, from the Phono Amp out, with NO phono cable plugged into the input on the Phono Amp, there is a very low hum.
3: With the Amp ON and the Phono Amp ON, and the input connected to the RCA in, from the Phono Amp out, with one more many phono cables plugged into the input and properly grounded, there is a very low hum. Same as #2
4: With the Amp ON, and the input connected to the RCA in from the Phono Preampliifer out, with the Phono Preamplifer OFF, there is a very loud hum.
Let me know if anyone has any thoughts.
Thanks,
Joey
I don't expect magic, but maybe the community here can give me some troubleshooting steps to fix a hum. It's going to be hard because both of these were built custom.
I have a Solid State Phono Preamp going to a Solid State Amp, When I turn the gain all of the way up, I get a low hum. It's no where near at the listening level and you have to have your ear against the speaker to hear it, but since I did wire these myself, I'd like to see if I can find the source and correct here. Here are the scenarios.
1: With the Amp ON, and no input connected to the RCA input, there is no hum.
2: With the Amp ON and the Phono Amp ON, and the input connected to the RCA in, from the Phono Amp out, with NO phono cable plugged into the input on the Phono Amp, there is a very low hum.
3: With the Amp ON and the Phono Amp ON, and the input connected to the RCA in, from the Phono Amp out, with one more many phono cables plugged into the input and properly grounded, there is a very low hum. Same as #2
4: With the Amp ON, and the input connected to the RCA in from the Phono Preampliifer out, with the Phono Preamplifer OFF, there is a very loud hum.
Let me know if anyone has any thoughts.
Thanks,
Joey