What do the arrows mean on my cable?


And how do I tell the difference between a digital cable and an RCA cable, they look the same.

Are the ones with the arrows more likely to be RCA for analog connections?

jumia

Well you are an ass if you read  his post in response to your accusations.

So what did you bring to this thread? Zero.

Only one polluting and trolling is you.

 

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juanmanuelfangioii

 

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@roxy54 - gotta love it when a new keyboard tough guy, here for not even 90 days, wields the big stick

568 posts in less than 3 months is pretty darned impressive though...

Oh yes, he’s up there on his ivory tower always telling us what bad boys we are.

+1 @whart 

Analog audio is alternating current, the electrons are pushed and pulled down the cable for each wave of the signal.  There is no overall direction, the push-pull is EXACTLY symmetrical so there are EXACTLY as many electrons travelling in one direction as the other averaged over time.  This is the case for low level interconnects like RCA and also for speaker wiring.  as @whart succinctly explains, the arrow indication on some interconnects is to identify the grounded end of a cable, where only one end of a separate shield is grounded, not the current flow direction of the signal itself.

It is also necessary to pay attention to @whart's point about safety:  All equipment that is not Class II double insulated MUST be connected to the AC mains supply ground to ensure safety from electric shock, this in turn can lead to multiple grounded connections in a system, in turn setting up the conditions for a hum loop.

From time to time I have lifted the ground wire on amplifiers to treat this, which is NOT THE RIGHT WAY to deal with this.  Unless you understand electricity and the insulation Class of all your equipment you should never disconnect the ground from anything connected to the AC mains supply.

The best way to completely prevent ground loops is with transformer isolation.  You can isolate on the signal side with exotic and very expensive signal transformers, like Tamura, Hashimoto, Sowter, UTC, Lundahl and so on, or you can isolate the AC mains to the equipment (each one separately) with a common-or-garden AC isolation transformer.

In top recording studios both these methods are employed, along with balanced signal wiring.  It is not trivially easy to do this right in a complex system.  Unless you have actual hum, I would leave this topic well alone and use 'ordinary' cables grounded at both ends for interconnects.