If you can only hear it with your ear against the ‘speaker then there really is nothing to worry about, or even think about. If there is a hum or buzz from your speakers, these tools remove it and reduce audio jitters to enhance your sound streaming experience.
problem was after a couple weeks of this trouble shooting and the OP thinking all these solution and the members time and effort wouldn't work or he'd try it later, finally pissed me off so I put him on the ignore list and I guess he moved on.Ground loop isolators affect the sound quality of your audio system by eliminating noise distortion and minimizing static, providing a clearer sound. I'm not sure if this solution would also work for devices that need the 5V USB power.I suggested the same (scotch tape) thing to an OP on here a couple months back, on an issue with a keyboard to and interface. If a device needs earthing it should get it from the power input, not from an audio or USB input.Īnother worthy mention: the Ventris is powered by a dedicated power cable, so it doesn't need (and probably doesn't draw) the 5V power off the USB cable. In any case, your audio cables are not supposed to carry ground from one device to another. But it is usually the ground that gives the problems with audio and ground loop so if you're going to cut one then it's the ground one. But if your device is already powered then you don't need the 5V and the ground. The ground is there for powering devices on the USB bus, together with a 5V line. That said, If you are using balanced speaker connection u could equally cut the audio cable ground, or even the speakers' power cable ground, which should work as well, but like I said, these are not safe methods by any means and should be avoided.It's worth noting that USB is differential (balanced), so it doesn't need ground to function. If there's a short circuit anywhere in the chain then any ungrounded device introduces risk of electrocurion or fire. Think about it, the ground is often common to all devices so it makes no difference whether USB is 5V. Well I am not an expert, but cutting the ground at any point of your electrical chain is not a smart think to do. without knowing what those conditions may be, it's hard for me to add anything to that. which is what I guess you are getting at. but it may not be safe in all conditions by the same token. If you are not using the power ground and it causes noise and adds no real protection in any case, then this fix may be sufficient I suppose. I would think the easiest way to check is to have a few PCB sockets floating around, so you have the external contacts at hand to more easily test the continuity conditions in the cables. it may have also been used for other signals in some cases, maybe like fast charging capability sensing etc. but often anything with a Micro USB may well not have any shield in any case. I'm not sure if pin 5 is part of the shell in that case. so if pin 4 and 5 are fused together, the cable is sensed as an OTB on the go cable. but another USB A to USB A cable did have continuity.Īnother thing about Micro USB is, the Micro plug usually has 5 pins. for example I just tested continuity on a USB A to Micro USB and there was no continuity on the shells. the metal shell is presumably a shield but may not always be connected.
I'm not always sure what role the ground plays in USB. I'm not sure if this solution would also work for devices that need the 5V USB power. I think it is perfectly save, as there is only 5V of power running through a USB cable, but just to be sure, I'd like to hear your opinions about it.Īnother worthy mention: the Ventris is powered by a dedicated power cable, so it doesn't need (and probably doesn't draw) the 5V power off the USB cable. I then connected the usb cable to the computer and dit a test: GONE! I then cut a tiny piece of tape and put it inside the connector to cover the pin of the ground. So I figured, if I isolate the ground pin inside the connector, the ground loop should be gone. So I decided to do a little research about USB cables/connectors and I found this: I first was looking for a usb ground loop isolator, which is pretty expensive for what it does IMO (about 70 euro). So, yesterday I finally found a solution for the ground loop noise my Ventris reverb pedal was producing whenever I connected it to the computer via usb.ġ) I am very happy about it and want to share my solution to anyone else having the same issueĢ) I am not 100% confident about the safety of this solution, so would like to get some advice about it.
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