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Author Topic: DHP-309AV traffic causing audio noise in external speakers  (Read 8804 times)

Caspian Canuck

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DHP-309AV traffic causing audio noise in external speakers
« on: December 01, 2013, 05:56:57 PM »

There is no dedicated forum for DHP-309AV, so I am posting this here...

I recently bought a DHP-309AV PowerLine AV 500 Network Starter Kit and noticed that traffic between the two adapters causes intense audio noise to be emitted through the speakers of my Logitech external audio system connected to my main computer. The system is powered from an electrical outlet different from the one used by a DHP-309AV adapter although they are on the same electrical circuit. When someone is watching Netflix or streaming something on the downstairs computer connected through the DHP-309AV link, I hear rhythmic bursts of high-frequency noise from my speakers that completely ruins whatever I am listening to -- whether music or speech. And even when the line is idle I still hear frequent pops apparently caused by data packets exchanged by the two adapters.

This is clearly not DHP-309AV's fault but the result of poor noise filtering on the part of the speakers' power adapter. So my question is, what power filters can I possibly use to block the noise from leaking into the audio system's amplifier?
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FurryNutz

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Re: DHP-309AV traffic causing audio noise in external speakers
« Reply #1 on: December 02, 2013, 09:24:11 AM »

You might try pulling the audio system into a different out let or distancing the adapters from the audio system speakers as far as possible. I don't think the use of any filtering would be advisable with the PowerLine as it could cause connection problems. You might try to filter the audio system power maybe...
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Caspian Canuck

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Re: DHP-309AV traffic causing audio noise in external speakers
« Reply #2 on: December 02, 2013, 09:35:28 AM »

Yes, I meant powering the audio through a filter of course.
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FurryNutz

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Re: DHP-309AV traffic causing audio noise in external speakers
« Reply #3 on: December 02, 2013, 09:48:56 AM »

Might do a search for power or AC power filters to see. I would check to see if you an move the adapter away from the audio sources and speakers as well initially. Might mean you have to run longer LAN cable from PC to adapter though. Cable is cheap...
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