I want to break an earth loop in a signal chain. Do gizmos like this work and what effect if any do they have on sound quality.
Thanks
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I want to break an earth loop in a signal chain. Do gizmos like this work and what effect if any do they have on sound quality.
Thanks
https://transparent-uk.com/c2g-stere...gaAtYGEALw_wcBAttachment 26323
How do you know you have an earth loop?
What are the symptoms you're experiencing?
Here is my perspective.
I have very sensitive speakers and sit near field so any hum in the speakers is a significant contribution. I also have a complex interconnect wiring circuit using the output from the main amp to supply a signal via DSP to the base amp. All this has brought about an increase in earth loop hum which I have diagnosed through 55 years of experience.
I have addressed the mains leads to reduce loops and have them all plugged into a single outlet. I wont be lifting any earthing wires.
This leaves me with the signal wires. I believe earth hums are produced by having (small) voltage differences between the earthing points within the system so that a (small) current flows continuously and you have hum which is normally about 50 Hz.
I think the gizmos are 1:1 transformers and will break the continuity between points in the system. I stand to be corrected by those who know better.
Having all of your devices plugged into a single power strip (ie using just one mains outlet from the wall) usually eliminates any ground loops.
However, it isn't always the case.
The bit about DSP is interesting.
You may be noticing noise that the DSP is superimposing over your signal.
Any chance of some pictures to see what you're playing with?
I got around my loop problem by getting a proper earth lift circuit fitted to my pre amp.
Sent from my 9001X using Tapatalk
DSP may be adding some noise. Is the noise coming from both amps?
A 10-100ohm resistor fitted between signal ground and chassis earth in your amps would help, assuming the RCA sockets are isolated from the chassis.
First let me say that with all valve amps there is a small amount of hum in sensitive speakers. This is normal.
With the DSP, volume control and ICE amp on and running but with no inputs the base driver is totally silent. With these components in circuit there is earth grounding hum in the base driver. I appreciate that any output hum on the main amp is brought back round to the base amp, but its more than that.