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White noise when using Zoom H6 as a USB interface

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White noise when using Zoom H6 as a USB interface

Postby theargus1984 » Thu Jun 21, 2018 10:26 pm

Hello!

Whenever I use my Zoom H6 as a USB interface I can hear a constant white noise coming both from the speaker on the back of the device and when I have headphones plugged in. The white noise is present even when the gain is turned all the way down. When the gain is turned up, the mic gets louder but the white noise still remains at the same volume.

I'm recording into a powerful PC that is used for video editing. I'm using Adobe Audition for the recording software.

Things I've tried so far:

- Different locations (ruling out radio interference)
- Different PCs. Issue is present on all.
- Different USB cabl
- Different XLR cable
- Turning phantom power off

Using the H6 as a standalone recorder (i.e. writing directly to the SD card) works just fine.

Any thoughts on what might be causing this issue? Thanks in advance!
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Re: White noise when using Zoom H6 as a USB interface

Postby Tim Gillett » Fri Jun 22, 2018 6:10 am

There will always be some noise coming from the speaker or headphones but normally it's so low as to not be a problem. To give us some sort of idea, how close do you have to be to the speaker to hear the noise?
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Re: White noise when using Zoom H6 as a USB interface

Postby ef37a » Fri Jun 22, 2018 6:57 am

I can only conclude that the monitoring gain on the Zoom is jacked up (post VC) when in USB interface mode but confess I cannot see why!

Have you asked Zoom? Might be a firmware update fix.

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Re: White noise when using Zoom H6 as a USB interface

Postby James Perrett » Fri Jun 22, 2018 9:53 pm

How are you powering the H6 - via USB or a separate power supply? Is there anything else apart from headphones connected to the H6? I'm wondering whether it could be some kind of grounding problem - possibly a ground loop or a noisy power supply.
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Re: White noise when using Zoom H6 as a USB interface

Postby resistorman » Sat Jun 23, 2018 10:20 pm

James Perrett wrote:How are you powering the H6 - via USB or a separate power supply? Is there anything else apart from headphones connected to the H6? I'm wondering whether it could be some kind of grounding problem - possibly a ground loop or a noisy power supply.

I had A noise problem... went away when I used battery power.
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