Korg Forums

drb32856 · Full Member Joined: 09 Jan 2007 Posts: 119

I waited for quite a bit before doing the update 3.1.2 on my original K61. I tried reading everything I could find on the update and or problems. Didn't find a lot so I went ahead and did it. Well the process went smoothly and without a hitch. So I felt less worried at that point. However later after not playing the board for a week I was preparing it for a show and found some issues.

1. The Kronos grand pianos sound distorted! And sometimes out of tune.
2. When using the new split/layer function the sound is distorted and the touch screen becomes less responsive.
3. Some of the sounds in many of the combis are now messed up. Distortion, or not sounding the same. Almost like the wrong samples are being played.

I thought that maybe it was a cable issue when I was at home, or maybe even my monitors and interface. However at last nights show the sound guy and some of the audience told me my keys were distorting badly. I use a Casio MZ-X 500 as my top board and it runs through the same mixer setup as the Kronos. No distortion from it. So anyway to go back to an earlier OS version or has anyone else had these issues? What would anyone advise me to do going forward? Any help/ideas would be welcomed.
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Korg Kronos 61 Korg Karma Korg Trinity+ DSI Rev 2 16 Casio MZ-X500 61-KEY Roland SH201 Roland FA-06 Ensoniq ESQ1 Alesis 7.1 Alesis Ion Alesis S4 and S4+ Emu B3 mod Yamaha MM6

19naia · Platinum Member Joined: 29 Nov 2012 Posts: 1216

If you can update back to the previous version, then you should do that.
If the previous version turns out to be without those issues, then you know your current OS update is behind the problem.

I would even go as far as trying a different usb storage and computer for the download of the latest update, and trying the download of the latest update all over again. Do the installation all over again after doing the update to the previous OS version. You want to find out first if the previous version installation clears up the issues before experimenting.

If the second attempt at the latest update doesn't work, then go back to the previous update again.

I hope it doesn't turn out that all OS versions, old and new ,come with the problems for you now.

You won't know until you try going back to the previous and also trying the latest update a second time maybe with a different USB device with OS downloaded from a different computer.

19naia · Platinum Member Joined: 29 Nov 2012 Posts: 1216

Also, Touch screen recalibration is another thing to try, for the bad touch response issue. I have a slight touch response issue also since updating to 3.1.2.
I never got around to recalibration yet, because it has been quicker to just touch a few times and get the response.

drb32856 · Full Member Joined: 09 Jan 2007 Posts: 119

19naia · Platinum Member Joined: 29 Nov 2012 Posts: 1216

drb32856 · Full Member Joined: 09 Jan 2007 Posts: 119

drb32856 · Full Member Joined: 09 Jan 2007 Posts: 119

ronnfigg · Posted: Tue Apr 25, 2017 4:17 pm Post subject:

Is the distortion in the headphone output?
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"To me the synthesizer was always a source of new sounds that musicians could use to expand the range of possibilities for making music."
Bob Moog

drb32856 · Full Member Joined: 09 Jan 2007 Posts: 119

ronnfigg · Posted: Tue Apr 25, 2017 7:06 pm Post subject:

I have found that inadvertently boosting EQ frequencies (in Set List mode) can cause this.
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"To me the synthesizer was always a source of new sounds that musicians could use to expand the range of possibilities for making music."
Bob Moog

SeedyLee · Posted: Wed Apr 26, 2017 3:23 am Post subject:

I seem to be getting distortion in one channel when playing the Kronos grands as well. At first I thought it was my monitors, but it doesn't seem to be an issue with other sounds or sources. Will check the meters and EQ settings and see if anything else is overloading internally.
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Current Equipment:
Korg Kronos 2 88, Reface CS, Roland JV-1080, TE OP1, Moog Subsequent 37, Korg ARP Odyssey, Allen & Heath Zed 18, Adam F5, MOTU MIDI Express XT, Lexicon MX200 & MPX1, Yamaha QY700, Yamaha AW16G, Tascam DP008ex, Zoom H6, Organelle, Roland J6 & JU06A

Previous: Triton LE 61/Sampling/64MB/4GB SCSI, MS2000BR, Kronos 1 61, Monotribe, NanoKontrol, NanoKeys, Kaossilator II, Casio HT3000, Roland VP-03, Reface DX, Novation Mininova, MPC One

mikelees · Posted: Wed Apr 26, 2017 6:37 am Post subject:

ArminH · Joined: 13 Apr 2011 Posts: 44

The latest OS works very unstable - sometimes it does nothing at all - sometimes it says 'please switch off - wait some time and switch on' - sometimes it plays but the knobs are not working anymore.

Never happens in previous firmware.

Hope they fix it soon.

And as for the new features split should work seamless if I select another sound for the upper part of the keyboard - but does not - it stops ALL sounds.

benny ray · Platinum Member Joined: 28 Nov 2014 Posts: 628

Yea my Kronos started making a loud noise for no reason and I shut if off and turned on was ok. There still seems to be issues with the new update though.
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K2 Kronos 88, Mojo 61, Korg CX3, Roland FANTOM 7

GregC · Posted: Wed Apr 26, 2017 5:14 pm Post subject:

I haven;t read every post above but to troubleshoot this issue, I recommend
disconnecting your "USB " B ( the square one) cable in the Kronos

Then reboot without it, to see if the distortion/noise goes away.

Maybe not related, but there is a USB/Apple Sierra audio loopback problem thats quite nasty . we believe its related to how Sierra mishandles USB and kronos audio.

Not to get side tracked, however. Do the USB B removal test. If no progress, also remove the USB A cable.

Its tedious but this is how trouble shooting gets done at our user level. We isolate where the problem is potentially originating.

I have not done the last OS update. So I can't mimic whats going on
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