I’ve been having a lot of trouble finding the cause of some irritating noises within my eurorack system. This definitely crosses over into a few other thread topics so I apologize if this is redundant.
I was sure that the route of my problems was power related. I was using all uZues power modules and was told that they are an old design and not that high in quality. I bought a 4ms Row 40 with their power supply today but nothing has changed.
One of the problems I have is with the standard hiss you find in all audio equipment. I’m generally fine with this although it could be a lot lower. The bigger problem I’m having is with a ringing/whining sound. This sound is coming directly out from behind two of my modules face plates and it’s in the audio signal path too. The two modules are the Morphagene and the Just Friends. The sound is also in the audio path of random modules both on and off of the same power supply as the Morphagene and Just Friends.
So far I have switched out my power module, unplugged all other equipment while listening for the sound to disappear, bypassed my USB hub, disconnected and rearranged modules, and tried different ins and outs.
I guess my question is, how can I definitively find out that this is still a problem caused by power so I don’t waste my money on really expensive (and confusing) PSU’s/noise filtering bus boards only to find out the noise persists?