# Noise/crackling in the right channel on the 6th voice count **URL:** \ **Category:** Super 6\ **Created:** [18 February 2023 20:22 UTC](https://forum.udo-audio.com/t/noise-crackling-in-the-right-channel-on-the-6th-voice-count/1702 "2023-02-18T20:22:29Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![waxdoctor](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.udo-audio.com/waxdoctor/32/504_2.png) [@waxdoctor](https://forum.udo-audio.com/u/waxdoctor)\ **Post date:** [18 February 2023 20:22 UTC](https://forum.udo-audio.com/t/noise-crackling-in-the-right-channel-on-the-6th-voice-count/1702/1 "2023-02-18T20:22:29Z")
I just got this beautiful instrument (desktop) and love it. It’s my 3rd day with it and I discover something not-so-nice ☹ I hear crackling/noise on the right channel on some patches. At first, I thought it might be something wrong with my headphones, (when I heard it the first day…) Today I tried some other HPs and had the same problem. So definitely the problem is with the super 6 d. I made some tests and found out that e.g. with the init patch, I get this noise whenever the 6th note is played. I guess one of the VCAs is faulty (but I hope it’s just an SW bug, if that is possible). to reproduce: On the init patch, I close the filter completely and open the VCA fully (ENV LEVEL fully turned up). rest untouched. Then I play the keys and on the 6th note (voice) - there comes the noise, and so on and so forth. Can someone please try this too and let me know? thanks a lot! I am on FW 0.53 (also init patch is 0.53) ---
**Author:** ![avery.moss.magic](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.udo-audio.com/avery.moss.magic/32/1250_2.png) [@avery.moss.magic](https://forum.udo-audio.com/u/avery.moss.magic)\ **Post date:** [18 February 2023 22:17 UTC](https://forum.udo-audio.com/t/noise-crackling-in-the-right-channel-on-the-6th-voice-count/1702/2 "2023-02-18T22:17:22Z")
I would reach out directly to UDO Support on their website - they are usually very prompt in rectifying situations. Sounds like either a small fault or a calibration issue, that behavior is not normal. Don’t worry, you’re in good hands! ---
**Author:** ![waxdoctor](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.udo-audio.com/waxdoctor/32/504_2.png) [@waxdoctor](https://forum.udo-audio.com/u/waxdoctor)\ **Post date:** [19 February 2023 19:43 UTC](https://forum.udo-audio.com/t/noise-crackling-in-the-right-channel-on-the-6th-voice-count/1702/3 "2023-02-19T19:43:51Z")
Thank you @avery.moss.magic Since you mentioned that the behaviour is not normal, I assume you tried it and had no noise/crackling in any voice, right? I did open a support ticket as you suggested - let’s see. I hope I don’t have to return the beauty and a simple secret calibration mode (key combo) does the trick… ---
**Author:** ![synth4ever](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.udo-audio.com/synth4ever/32/84_2.png) [@synth4ever](https://forum.udo-audio.com/u/synth4ever)\ **Post date:** [22 February 2023 03:17 UTC](https://forum.udo-audio.com/t/noise-crackling-in-the-right-channel-on-the-6th-voice-count/1702/4 "2023-02-22T03:17:58Z")
Have you tried reducing the VCA Env level to see if that makes a difference? I recall max VCA Env level can cause crackling distortion when near the limit. ---
**Author:** ![waxdoctor](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.udo-audio.com/waxdoctor/32/504_2.png) [@waxdoctor](https://forum.udo-audio.com/u/waxdoctor)\ **Post date:** [22 February 2023 10:37 UTC](https://forum.udo-audio.com/t/noise-crackling-in-the-right-channel-on-the-6th-voice-count/1702/5 "2023-02-22T10:37:05Z")
Thanks but no. Even though with VCA ENV Level fully up, the other voices were fine. Anyhow the problem was now confirmed by UDO as a faulty voice card. My dealer replaced it with a new unit and all is fine, and I am in synth heaven really 🙂