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Korg Forums A forum for Korg product users and musicians around the world. Moderated Independently. Owned by Irish Acts Recording Studio & hosted by KORG USA
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Cardindex
Joined: 19 Jul 2021 Posts: 5
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Posted: Mon Jul 26, 2021 3:42 am Post subject: Volca Keys phase cancellation issue |
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I’m a new Volca Keys user, but I made the mistake of hooking my Volca up to a guitar pedal using a 3.5mm TRS out of the headphone input to a 1/4” TRS adapter in the pedal.
I not only got a weak signal (phase cancellation?), but now the poor signal persists WITHOUT the aforementioned cable or pedal. It’s barely audible on the internal speaker and with headphones I can hear a little signal, but mostly noise. Both the speaker and the headphones sounded fine before I hooked up the pedal. Why is this and how can I fix it?
Thanks for any advice on this. |
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OpAmp Platinum Member
Joined: 07 Jun 2013 Posts: 1176 Location: Brussels, BE
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Posted: Wed Jul 28, 2021 8:43 pm Post subject: |
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Hi,
Sounds like that the hooking up on the pedal has damaged your unit somehow.
I would think it is protected vs. wiring mistakes, but not sure on that.
Get it to a repair center. Not sure they are gonna fix it though...
Good luck _________________ microKORGXL, Kaossilator Pro, monotribe, SQ-1, volca fm, Kross 88 BK
Alesis SR18, Akai Miniak, Fender Strat, Line 6 Spider II 112, Zoom MS-50G |
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Cardindex
Joined: 19 Jul 2021 Posts: 5
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Posted: Thu Jul 29, 2021 1:16 am Post subject: |
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Thanks, yes. That's what I feared. The only problem is finding a repair center that would even look at it. I've struck out with all the local shops in my area. |
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slug Senior Member
Joined: 03 Aug 2007 Posts: 371
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Posted: Thu Jul 29, 2021 1:27 am Post subject: Re: Volca Keys phase cancellation issue |
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Cardindex wrote: | I’m a new Volca Keys user, but I made the mistake of hooking my Volca up to a guitar pedal using a 3.5mm TRS out of the headphone input to a 1/4” TRS adapter in the pedal.
I not only got a weak signal (phase cancellation?), but now the poor signal persists WITHOUT the aforementioned cable or pedal. It’s barely audible on the internal speaker and with headphones I can hear a little signal, but mostly noise. Both the speaker and the headphones sounded fine before I hooked up the pedal. Why is this and how can I fix it?
Thanks for any advice on this. |
I can't think of any way connecting the Volca output to an input could harm anything in the Volca. May be a fault unrelated to what you were doing, or it is the output jack itself broken when using it. They are only tacked onto the board so definitely a weak point. |
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ShoNuff Full Member
Joined: 27 Oct 2014 Posts: 221
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Posted: Thu Aug 05, 2021 2:48 pm Post subject: |
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i accidentally ran my Keys on 19v for about half an hour, and it didn't mind at all
although i wouldn't recommend trying to reproduce that (it was a power supply with same yellow tip, accidently connected to the wrong one).
(mind you it was a supply that came to me with a 2nd hand Kick, was a bit shocked when i looked at the rating, but the Kick is fine too.)
i think if you run that stereo output into a balanced input you're going to have the cancellation issue. try connecting just one side by splitting it out with one of those 1/8" stereo-to-2x RCA cables. |
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OpAmp Platinum Member
Joined: 07 Jun 2013 Posts: 1176 Location: Brussels, BE
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Posted: Thu Aug 05, 2021 8:35 pm Post subject: |
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Note that the problem is not only on the headphone output, but also on the internal speaker. _________________ microKORGXL, Kaossilator Pro, monotribe, SQ-1, volca fm, Kross 88 BK
Alesis SR18, Akai Miniak, Fender Strat, Line 6 Spider II 112, Zoom MS-50G |
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