Ansible & grid / power issues?

thanks! trying to find a uk link…:slight_smile:

I have noticed this problem with my set up and tested quite a few things today so I thought I’d post some details in case it clarifies/ helps anyone else out. All ansible modes with grid aluminium 128 make the noise, getting much louder as more lights light up, I’ve tried multiple different positions and with variety of modules in the same case which makes no difference, I have tried 4ms row power 40 and 30, significantly under their draw limits (104hp mostly mutable), also rosie as output if that’s significant. It seems less noticeable in my small 84hp mostly mannequins case with row power 40 but still there. Then I tried powering with monome switch but powering from the spare out on the row power (something I think @tehn suggested is fine to do) and it didn’t change anything (I thought that might have helped a little at least). So I’ve used a completely separate power supply for switch and finally no whining. So that’s a solution for those who have 2 supplies and a monome switch, other than that I might try the power splitter people are posting so that I can use something with my smaller case.
@scanner_darkly how easy would it be to make the ‘play progress’ bar on earthsea much dimmer (one of the lowest brightnesses would be fine), as this is the main culprit a the moment, I hear the whine build to quite loud as the buttons all light along the top row and then drop to much quieter. Sorry to even ask, earthsea is such an amazing addition to ansible, but I have zero coding experience and (at least personally), this would make a big difference to my 2 ansibles.
Thanks all.

right now it uses the brightness level of 11 for the progress bar, i can change it to lower, but one thing to consider is non varibright grids, as anything lower than 8 would be invisible. i’ll ask in the ansible earthsea thread.

Ah right, that makes sense. Thanks for replying. Maybe it could be a single button light tracking along the top instead of the ‘progress bar’? Though I guess this wouldn’t look as good with all the other flashing going on. Maybe it’s just me having issues anyway. Thanks again

I’ve been powering my grid with one of the usb y-splitters mentioned above. Just for the heck if it I tried using a lumsing portable battery pack rather than plugging in an outlet and it worked perfectly. Now I’m just wondering if it’s safe for the grid and ansible (even though ansible is only receiving the data split). Here is a photo with the specs:

that should work perfectly

great; thanks for the speedy reply

Hi there, got the high pitched noise issue with my grid + ansible system. Just did the red wire cut from cable splitter action and it did not reduce the noise at all on my intellijel case. Any ideas what to do next? I’ve ordered offworld which hasn’t arrived yet, but if the USB splitter cable to power does nothing, then offworld won’t either? Someone mentioned cheater plug, never heard of those things - is there some equivalent of those for EU area?

If you’re using the splitter, but still powering the monome through the intellijel case (via the 1u USB module), then you will still hear interference/noise. You must power the monome (with the splitter) externally in my experience. Use a 5v apple iphone plug with USB insert or similar and plug it in a wall outlet. Hope that helps…

thanks, i’m feeding the extra power via apple plug… maybe i will try a separate usb power bank, just need to get one.

wow, the noise is there just as soon as i plug the grid to ansible. seems like the noise comes from the intellijel power supply as soon as grid is plugged in.

The high pitched noise doesn’t actually seem to leak to the sound, but it’s emanating from the grid and power supply. So this is not so serious, can live with that.

That’s how mine is! I think we’re somehow hearing the LEDs. For me even with every LED full blast it’s never loud enough to be truly annoying, thankfully.


extra photos …. of Y splitter cut! - before

and after - system wouldn’t take 2 photos ….

Out of curiosity, for those that are getting grid noise: are you using powered studio monitors when you notice the whine? I was getting this when using my ansible but I’m also getting it powering grid through teletype. I’ve got studio monitors plugged into the same power strip as my case. Monitors come out of a Befaco output module. When I unplug the monitors and only listen via the headphone out on the Befaco, the whine is gone. Could alternative solutions involve isolating speakers rather than the grid (aren’t there isolating power strips?)

I’m dealing with this now as well. Intellijel 7U case, and the noise starts when Grid is plugged into Ansible - but the weird thing is that I only hear it (or notice, at least), through Magneto! Most noticeably when the wet signal is turned up.

@clark.gable @srogers91 both of your output modules use balanced outs; are you using balanced cables to send your output to your monitors? A few months ago I had some noise issues sending my synth’s output (Ansible/Grid combo used) to my monitors that was solved as by using balanced cables. Not sure if the noise I faced was caused from Ansible/Grid but it’s worth a shot if you’re not using them.

Has anyone else struggled with connectivity issues when using Offworld-type power solutions with Grid 128 (2016+) and Ansible? My connection sometimes drops out, or fails to connect at boot, leaving the Grid powered but unresponsive (can tell it’s powered from the boot-up animation). This requires a reboot of my system but not necessarily the Grid.

I’m wondering if this is a side effect of reverse-powering the Ansible last year…

Ah yeah, read your previous post and meant to address that too. My final output module is a Panmix and the noise comes through even with the headphone out.

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