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unbalanced outputs from XLR and ground hum/buzz

I'm having issues with my pioneer ddj-s1. I hooked up the left and right XLR outputs to my speakers and the left channel is outputting at a lower signal. I have confirmed this also by running my outs from the DDJ-S1 into another mixing board.

I'm also getting a hum/buzz from the XLR outputs when hooked up to my powered speakers. The left speaker is connected with a 50ft XLR cable and the right with a 25ft XLR cable.

Has anybody else experienced this?

john hoang

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Idk about the buzz, but the latency should be affected by the different length. My speakers had problems if my white cable was longer than the red.

Alex Tha Greek 0 votes
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It's not latency issue. The output level of left channel is lower.

john hoang 0 votes
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i have also tried different XLR cables of the same length as well.

john hoang 0 votes
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@john > Unless there was an impedance problem with the cables, or the source tracks are not even, the levels should be balanced between L and R.  If you reverse the cables does the audio drop go to the other side?  What about when you used a different pair of cables?

The buzzing could simply be a ground loop or interference from your computer - if it's a laptop, try disconnecting the power supply to the laptop and see if the buzz goes away.  You may need to try a ferrite-core on the USB cable or get a DI box to run between the controller and the speakers.

Pulse 0 votes
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The source audio is fine. The VU meters on the controller are at the same levels. I still get the buzzing when running the laptop on battery. I am going to try to put everything on a power conditioner to see if I still get the buzzing.

I tried different pairs of cables, and even reversed the cables and it dropped to the other side. I contacted support, and they told me to take the controller to my local Pioneer service center. It is still under warranty (bought Mar '11).

If all else fails, I will send the unit into Pioneer for repairs.

john hoang 0 votes
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Yeah, I've had a hum in my laptop audio. When I connect DJ hurcules 4+6, No hum. When I connect Ergo, the hum is there. Really annoying. Nothing fixes this... Not even a ground loop isolator :-(

Jamey Sewell 0 votes
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@Jamey > Have you tried unplugging the laptop power supply?  Does it disappear then?

Pulse 0 votes
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So I went to my authorized repair shop and they replaced the output sound board. It was working fine for a few gigs, and then again, it went out. This time the right XLR output signal is lower than the left XLR output signal. I emailed Pioneer and asked if I could get new replacement unit, but they said I have to send it back into the repair center.

Has anyone else had issues like this?

I hate to say it, but I may just sell my controller after repair and go with the Numark NS6

john hoang 0 votes
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Is there any known issues if I only use one XLR output in mono that may be causing the XLR outputs to go bad? I usually run my setup mono out to sub then to my tops.

john hoang 0 votes
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@John > No, that shouldn't cause any issues.

Gavin 0 votes
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