#37

Eurorack user here, I’m getting a weird high pitch whine (usually just a dull hum that I’m used to) so I know something is wrong.

I have my digitakt and my modular through separate channels on an external mixer. The digitakt channel is clean but my modular channel has the whine even when my modular is turned off, what could this mean?

Thanks in advance.

#38

Do you have a grid on 5v of the power supply? I’ve gotten such a hum before in that case (that I don’t get when decoupling power w an offworld)

#39

Trouble-shooting noise has been the most-present / least-fun part of getting into Eurorack :sweat_smile:

I would recommend, if you haven’t already:

  1. make sure that you are well-under the max power consumption of your power supply. (I think I see people kicking around 80%, but I have no idea why that target is chosen.);
  2. unplug everything. Add modules until the noise is present. (Or the reverse.) This how I discovered that my Hermod was always noisy in my Intellijel 7U, regardless of number of other modules plugged in.

Good luck!

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#40

Is there a Morphagene connected in your eurorack system?

#41

yes, I do have a Morphagene.

#42

So I did something similar where I used my headphones and tested each output.

I’m just wondering, is it even coming from my case? If it’s off and I still hear the noise?

#43

Take just the Morphagene out and see if the whining is still there. I had a whining noise coming from my Morphagene and it was leaking into my other modules outputs. I had to buy a better more powerful and cleaner power supply and it fixed it. I still get some noise from the Morphagene itself but it doesnt leak into the other modules any more. I contacted Make Noise about this more than once and they insist it’s normal behavior.

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#44

i found this to be true as well.

#45

I’ll try taking it out and see what happens.

#46

This resolved my Morphagene whine as well (at least as far as I could hear). Upgrading my power supply took care of a number of noise issues I was experiencing (oscillator bleed, for instance).

#47

My power is at 1423 MA +12V (stolen from Modular grid) and I have a Volgen power supply…

#48

Also I’m not sure how much power I am consuming…

#49

Any user out there can comment on whether the high frequency peak around 10k-13k is normal or is it my module or power that’s creating this problem.

Lately I’ve been getting small tingling shocks from my make noise skiff even though the modules are using up only slightly more than half capacity, could that be the cause of it?
Appreciate any help.

#50

I’m not the expert but the problems I had with PSU noise where manifesting themselves with a constant noise floor. Here it sounds more like the module is creating this noise. Do you hear any noise when no audio is being produced by any module?

I don’t think this should be happening. Haven’t gotten any shocks from any case I’ve owned so far (some of them were really badly put together DIY cases I had made myself).

#51

Getting small tingling shocks from any piece of electrical equipment that is not meant to shock you indicates something is definitely wrong. You should not be using it while it is powered. Disconnect it from power and remove everything!!!

#52

I tried all my modules one by one and the make noise skiff is still giving me from a shock to a tingling if I take a cable patched in (for example) a via out and touch the end.
This is not normal right?
What could be the problem?

#53

Not sure about the relevance of this but to my experience this also really depends on where you are living. I have been living a number of years in a developing country and all my electronic equipment gave me proper shocks and tingles when not wearing proper shoes for instance. That included my modular as well as my pedals or even Mac computers. And, surprise surprise, that happened to pretty much anyone there with similar equipment. But that was apparently related to general grounding issues or the lack of it…so, maybe not so helpful in your case.

#54

Actually it’s quite helpful because my macbook also gives me some small tingles when not wearing the proper shoes so, it must not be a modular psu problem but more of a “old house in Porto problem”

#55

Cool, that might well be an indication of grounding issues at your property then. Not sure if you as a tenant can do anything to alleviate this issue though…apart from wearing proper shoes of course;)

#56

Hello, all!

In the last couple of weeks, I’ve been experiencing some very odd noise from my modular: a periodic DC offset pulse that sounds like a blip at about 2.6 Hz. I notice this noise when outputting through my Expert Sleepers ES-8, my Doepfer A-138p, or directly from a sound source to my sound card. It doesn’t seem to track the behavior of any other module in my system (that is, it isn’t synced to clocks or other LEDs) and it doesn’t seem to be associated with anything else nearby – I’ve unplugged lamps and turned off my computer, to no avail.

For an example of this phenomenon, here’s what should be a plain sine wave: https://www.dropbox.com/s/o6fypv0pte76ucj/sine-blips.aif?dl=0

Are there some good strategies to debug this kind of problem?