Ground Loop: Difference between revisions

DT section on diagnosing/troubleshooting Ground Loops
 
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[[Image:Cheaterplug.png|right|cheater plug]]
'''Safety Note'''
NEVER use a cheater plug or cut the ground plug off an ac power cord.


From the Owners Manual
: Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized  plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wider blade or third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
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== Diagnosing / Troubleshooting ==
== Diagnosing / Troubleshooting ==
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The direct boxes can be expensive, check to see if you can return them if they don't solve your problem or if you find that you don't all of them.
The direct boxes can be expensive, check to see if you can return them if they don't solve your problem or if you find that you don't all of them.


In some cases ground loops or buzz in the presents of certain light dimmers can be difficult to completely solve and some residual hum may be audible. There are some types of light dimmers that produce less electrical noise. One technology is known as "zero crossing" switching which generate less electrical interference.
In some cases ground loops or buzz in the presence of certain light dimmers can be difficult to completely solve and some residual hum may be audible. There are some types of light dimmers that produce less electrical noise. One technology is known as "zero crossing" switching which generate less electrical interference.


Hopefully some of this info is relevant and helpful.
Hopefully some of this info is relevant and helpful.
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Dave
Dave


Dave also recommended reading [http://www.radialeng.com/di-prodi-prod2-development.htm Ground Loops] at Radial Engineering.
Dave also recommended reading [https://web.archive.org/web/20111228084345/http://www.radialeng.com/di-prodi-prod2-development.htm Ground Loops] at Radial Engineering.
 


== Ground Loops (article excerpt) ==
== Ground Loops (article excerpt) ==
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=== Related Discussions ===
=== Related Discussions ===
* [http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/9491015302?r=9491015302 Grounded Plug]
* [https://www.bosepro.community/g/portable/topic/two-prong-cheater-plugs-for-ac-power Two Prong Cheater Plub for AC Power]
* [http://www.radialeng.com/di-prodi-prod2-development.htm Ground Loops] at Radial Engineering.
* [https://www.bosepro.community/g/portable/topic/grounded-plug Grounded Plug]
* [http://bose.infopop.cc/eve/forums/a/tpc/f/6366055944/m/8671042332?r=6741094332#6741094332 Laptop Playback Noises], [http://forums.us.dell.com/supportforums/board/message?board.id=insp_audio&message.id=18216 Dell Audio FAQ], [http://forums.us.dell.com/supportforums/board/message?board.id=insp_audio&message.id=23486 Dell Ground Loop Problem]
* [https://web.archive.org/web/20111228084345/http://www.radialeng.com/di-prodi-prod2-development.htm Ground Loops] at Radial Engineering.
* [http://bose.infopop.cc/eve/forums/a/tpc/f/6366055944/m/7551083734?r=7551083734 Magnetic Pick-up Noise]
* [https://www.bosepro.community/g/portable/topic/laptop-playback-noises#6741094332 Laptop Playback Noises].
 
* [https://www.bosepro.community/g/portable/topic/magnetic-pick-up-noise Magnetic Pick-up Noise]


Download: [[Media:Sound System Interconnection.pdf|Sound System Interconnection.pdf]]


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