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Choosing Unbalanced RCA Audio Cables for Home Use: What Really Matters? - Shielding & Directionality Questions

DaleCarter1021

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Feb 24, 2019
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Good Morning,

I am new here and have "zero" formal qualifications for this topic, such as being a properly educated electrical engineer, broadcast technician, studio engineer, metallurgist or, in the case of "high end/audiophile" cable companies, Certified Snake Oil Sales Associate" hahaha

That said, I have 35 years of layman experience in recording studios (performer, engineer and producer), "pro" audio (clubs to hockey arenas) as a a system builder and FOH operator, as well as a number of friends/colleagues who are actual EE's, physicists, broadcast engineers, legendary FOH mixers, top flight (multi-platinum) record engineers and mastering techs, microwave broadcast techs, etc etc

My $0.02? Unbalanced RCA cables are to be used for analog signals ONLY when a balanced XLR is not available. Even then, interrupting the shield at one end or the other, may prove beneficial. I am not sure how breaking the shield, i.e. a shunt or dump, is effective for an unbalanced signal, but I am open to education by those more knowledgable than myself. Unbalanced cables should only be used for short patches in a rack or patch bay, but, even then, balanced paths are preferable.

For home use, whether the setup is for recording/tracking or for a "reference" reproduction setup, the distances covered, and the levels used, will be unaffected by cables built to a very basic level.

I bet that nowhere near enough time/effort/money has been spent on the room (acoustics, HVAC, electrical filtering, etc) to notice the effects of a properly designed RCA cable, especially in the home.
 

rwortman

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Balanced connections for the one meter or so runs typical of a home audio installation are in the category of completely unnecessary most of the time. If you aren't picking up audible noise, you don't have a problem. Pro sound reinforcement is another story. \
 

DonH56

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The main reasons for differential runs in the home are to break a ground loop or to suppress EMI/RFI.
 
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