Laptop Hum - Revision history

ST at 20:24, 31 July 2024

2024-07-31T20:24:55Z

← Older revision		Revision as of 20:24, 31 July 2024
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	Your best bet is a two-channel passive DI box with a ground lift switch such as this:		Your best bet is a two-channel passive DI box with a ground lift switch such as this:

	~~http~~://www.audiopile.net~~/products/DI_Boxes~~/FDB-202~~/FDB-202_cutsheet.asp~~		https://www.audiopile.net/FDB-202

	Hope that helps		Hope that helps

ST at 13:37, 7 April 2019

2019-04-07T13:37:56Z

← Older revision		Revision as of 13:37, 7 April 2019
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	<noinclude>This page is a stub. Please help by adding more information if you can. Thanks [[User:ST\|ST]] 20:29, 8 December 2007 (GMT-7)</noinclude>		<noinclude>This page is a stub. Please help by adding more information if you can. Thanks [[User:ST\|ST]] 20:29, 8 December 2007 (GMT-7)</noinclude>
	<blockquote>		<blockquote>
	From the Dell Audio Faq		;From the Dell Audio Faq
	"How do I eliminate the buzzing noise from my speakers or headphones that occurs only when my system is connected to AC power?		"How do I eliminate the buzzing noise from my speakers or headphones that occurs only when my system is connected to AC power?"

	Ensure that both the computer and any external speakers are plugged into the same outlet or power strip. This should eliminate or minimize the buzzing associated with a ground loop. You should not assume that all outlets in a single room are on the same circuit. Outlets may be on different circuits, even when they are close to each other. In studio type situations where buzzing associated to a ground loop is unacceptable, an isolation transformer can be used. An isolation transformer should eliminate the problem, but is typically expensive. While a three to two prong wall outlet adapter (removing ground) will eliminate the noise, for safety concerns this solution is definitely not recommended. "		Ensure that both the computer and any external speakers are plugged into the same outlet or power strip. This should eliminate or minimize the buzzing associated with a ground loop. You should not assume that all outlets in a single room are on the same circuit. Outlets may be on different circuits, even when they are close to each other. In studio type situations where buzzing associated to a ground loop is unacceptable, an isolation transformer can be used. An isolation transformer should eliminate the problem, but is typically expensive. While a three to two prong wall outlet adapter (removing ground) will eliminate the noise, for safety concerns this solution is definitely not recommended. "
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ST at 13:35, 7 April 2019

2019-04-07T13:35:04Z

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 <noinclude>This page is a stub. Please help by adding more information if you can. Thanks [[User:ST|ST]] 20:29, 8 December 2007 (GMT-7)</noinclude>
 [[Image:DIbox.gif|right|DI boxes]]
 <blockquote>

ST at 15:56, 8 June 2010

2010-06-08T15:56:15Z

← Older revision		Revision as of 15:56, 8 June 2010
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	This page is a stub. Please help by adding more information if you can. Thanks [[User:ST\|ST]] 20:29, 8 December 2007 (GMT-7)		<noinclude>This page is a stub. Please help by adding more information if you can. Thanks [[User:ST\|ST]] 20:29, 8 December 2007 (GMT-7)</noinclude>
	[[Image:DIbox.gif\|right\|DI boxes]]		[[Image:DIbox.gif\|right\|DI boxes]]
	<blockquote>		<blockquote>

ST: EBTECH Hum x

2010-06-08T15:55:48Z

EBTECH Hum x

← Older revision		Revision as of 15:55, 8 June 2010
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	See it [http://bose.infopop.cc/eve/forums/a/tpc/f/867107664/m/2371063694?r=1921010794#1921010794 in context]		See it [http://bose.infopop.cc/eve/forums/a/tpc/f/867107664/m/2371063694?r=1921010794#1921010794 in context]

			There are several reports on the {{Forum}} that the [http://www.ebtechaudio.com/humxdes.html EBTECH Hum Eliminator] works for removing hum when using a laptop power supply.

			See: [http://bose.infopop.cc/eve/forums?a=search&reqWords=ebtech search results for Ebtech on the forum]

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ST: DI boxes

2007-12-29T16:56:48Z

right|DI boxes

← Older revision		Revision as of 16:56, 29 December 2007
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	This page is a stub. Please help by adding more information if you can. Thanks [[User:ST\|ST]] 20:29, 8 December 2007 (GMT-7)		This page is a stub. Please help by adding more information if you can. Thanks [[User:ST\|ST]] 20:29, 8 December 2007 (GMT-7)
			[[Image:DIbox.gif\|right\|DI boxes]]
	<blockquote>		<blockquote>
	Laptop (notebook computer) power supplies are notoriously noisy. The quick test to find out whether this the culprit, is to simply unplug the power and run off battery. If the noise goes away, you know it's the power supply.		Laptop (notebook computer) power supplies are notoriously noisy. The quick test to find out whether this the culprit, is to simply unplug the power and run off battery. If the noise goes away, you know it's the power supply.

ST: formatting link

2007-12-29T16:54:12Z

formatting link

← Older revision		Revision as of 16:54, 29 December 2007
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	</blockquote>		</blockquote>

	See it [~~url=~~http://bose.infopop.cc/eve/forums/a/tpc/f/867107664/m/2371063694?r=1921010794#1921010794]in context~~[/url~~]		See it [http://bose.infopop.cc/eve/forums/a/tpc/f/867107664/m/2371063694?r=1921010794#1921010794 in context]

ST: first ed

2007-12-08T13:29:29Z

first ed

New page

This page is a stub. Please help by adding more information if you can. Thanks [[User:ST|ST]] 20:29, 8 December 2007 (GMT-7)

<blockquote>
Laptop (notebook computer) power supplies are notoriously noisy. The quick test to find out whether this the culprit, is to simply unplug the power and run off battery. If the noise goes away, you know it's the power supply.

Your best bet is a two-channel passive DI box with a ground lift switch such as this:

http://www.audiopile.net/products/DI_Boxes/FDB-202/FDB-202_cutsheet.asp

Hope that helps
Hilmar

</blockquote>

See it [url=http://bose.infopop.cc/eve/forums/a/tpc/f/867107664/m/2371063694?r=1921010794#1921010794]in context[/url]

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[[Category:Computer]]
[[Category:Hum]]
[[Category:Noise]]