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RCA and Optical PC audio cable are equal ?

post #1 of 10
Thread Starter 
I would like to buy a new aftermarket RCA/mini jack or Optical cable to replace my actually RCA find into bundle of my Edifier S330D, but i'm asking what is the targets to follows to choose a good cable without any problems.

I got fear that another cable cannot be 100% compatible like the bundle cheaper cable.

I see many brand and many beautiful models with large rage of prices, i saw for example : Goobay, Manhattan, Clicktronic, Lindy, Xos,, LCS, IBRA, Redline ........... all sleeved and golden connector cables but i dont know why someone have high price and others cost much less, why ?

What should i look ?
All these run equally ?
post #2 of 10
Thread Starter 
cut .........
post #3 of 10
It looks like stereo RCA (analog) and optical S/PDIF (digital). Those are definitely different, though that doesn't really guarantee much about the difference in sound. The digital connection means the D/A conversion happens in some module integrated into the speaker set.

Usually different makes of RCA cables shouldn't make a difference in the sound. However, there is an aftermarket cable market that includes products of many different prices. This is because there is a market for it and some people that believe it is helpful. This sector is ridden with marketing scams and products that are pretty much the same and made in the same factories but cost many times different.

Technically, some differences in cable construction can make some differences other than just mechanical properties of flexibility, weight, etc. and the looks. Some are better than others at rejecting electromagnetic interference. However, if you don't have interference, there is no reason the cheap cable shouldn't be effectively the same. With very high source output impedance, a long enough cable, and high enough capacitance, you could also get a slight high-frequency rolloff. This can be calculated, but it's rarely an issue.

Gold-plated connectors resist oxidation better (which can just be wiped / treated anyway, if it really got to that...), but nickle-plated stuff is pretty good at that and is more physically durable too. Also, how often does your stuff oxidate? Leaving the speakers on a boat deck?

For optical cables, again, it depends very slightly on the source and receiving devices, but you're very unlikely to find issues there either.

In audio, you have much, much, much, much, much, much bigger problems to be worrying about usually. As for buying advice, don't waste money on something expensive, don't get something that looks like it will fall apart too easily, and don't get something too long (or too short). And don't waste time worrying about it.
post #4 of 10
Thread Starter 
Im not interested about difference of two typologies of cables, i know, im interested only of the phycal characteristics of the cable and that can run 100% without problems.

I need a simple 1.5m of audio cable in my house for my PC can buy a cheap Optical cable without problems ?

My only fear is that an aftermarket cablet can cause new problem of function compared to bundle cable
Edited by senna89 - 3/11/14 at 4:12pm
post #5 of 10
I'm still not really sure what's being asked.

What was meant by "compatible"? The cable doesn't affect the features supported.

If you want to use S/PDIF output out of your computer and effectively be using the module inside the speakers for D/A, get a cheap optical S/PDIF cable. There shouldn't be problems in terms of function (either by functionality—it allows you to send audio data for those speakers to play; or by how it functions in terms of audio quality and performance).
post #6 of 10
I think you're talking about which you should use for the best overall reliability? If so, I think you want to go with analog. Digital is great but sometimes there are codec issues with certain devices depending on bitrates it may or may not support. Analog audio will always work as long as the device is functioning.
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post #7 of 10
Thread Starter 
Quote:
Originally Posted by mikeaj View Post

I'm still not really sure what's being asked.

What was meant by "compatible"? The cable doesn't affect the features supported.

If you want to use S/PDIF output out of your computer and effectively be using the module inside the speakers for D/A, get a cheap optical S/PDIF cable. There shouldn't be problems in terms of function (either by functionality—it allows you to send audio data for those speakers to play; or by how it functions in terms of audio quality and performance).

im talking about same type of cable

So ... optical cable aftermarket VS optical cable i find in budle with my 2.1 system.
post #8 of 10
Then I'm confused why you're asking about it in the first place. Use whatever you have if it currently works. As explained earlier, there aren't really audio or functionality improvements with something aftermarket.
post #9 of 10
Quote:
Originally Posted by senna89 View Post

im talking about same type of cable

So ... optical cable aftermarket VS optical cable i find in budle with my 2.1 system.

I agree just go with Analog cables an move on

I had a mono price spDif cable that was gawd awfully noisey with some of my spDif outs,

so while the cable should be fine, not all devices with optical out are as clean as they should be, my current tv/monitor has a very noise optical out, the analog out was a lot cleaner, still if you want to take a chance with noisy optical utilizing devices go spidf

but the last question is RCA cables are analog and optical is digital? You feed Analog into an amp and optical into a dac most of the time, so if your device accepts both RCA and optical they may have a different function,
post #10 of 10
There's another level of confusion and that is.... the coax digital audio cable uses an RCA connector at the end. Yay confusion.
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