emaja
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Theo is here!
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Post by emaja on Mar 24, 2011 15:30:06 GMT -5
I know RCA really refers to the connectors, but what about the cable itself? Can I use a digital coax with RCA connectors where I would use interconnects to connect a pair of UPA-1s to my receiver?
Can I also do the reverse - are they interchangeable?
Eric
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Post by BillBauman on Mar 24, 2011 17:38:29 GMT -5
I know RCA really refers to the connectors, but what about the cable itself? Can I use a digital coax with RCA connectors where I would use interconnects to connect a pair of UPA-1s to my receiver? Can I also do the reverse - are they interchangeable? Eric You can do this, and usually, it works. However, they are not identical. The difference is in their impedance. A properly designed digital coax cable has an impedance of 75 Ohms (as does a properly designed RCA composite video interconnect cable). A properly designed unbalanced audio RCA interconnect cable has an impedance of 50 Ohms. if the cable is much longer than 1m or so it may not work, cause odd functioning, or begin to degrade sound quickly, if not used in a function matched with the desired impedance (Ohms). Short answer: They are not interchangeable. |
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Post by copperband on Mar 24, 2011 17:53:05 GMT -5
I have similar question when I wanted to know which X series cable to buy to connect my receiver with the XPA-5.
Emotiva sells both X series RCA and coaxial interconnect and they are of the same prices. I asked them and Vincent Chen replied and suggested me to buy the coaxial to connect my receiver to XPA-5.
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Post by roadrunner on Mar 24, 2011 18:54:08 GMT -5
I have similar question when I wanted to know which X series cable to buy to connect my receiver with the XPA-5. Emotiva sells both X series RCA and coaxial interconnect and they are of the same prices. I asked them and Vincent Chen replied and suggested me to buy the coaxial to connect my receiver to XPA-5. For that particular application it should not make a significant difference which cable you used. I seriously doubt you would hear any difference unless you are using a tube preamp to connect to the XPA-5 power amp. For the vast majority of solid state preamps to solid state power amps the differences between a standard RCA interconnect and a coax based RCA cable would not be audible. |
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Deleted
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Post by Deleted on Mar 24, 2011 19:02:31 GMT -5
Roadrunner is correct, you will not hear any difference. Go ahead and use whatever you have on-hand...
-RW-
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emaja
Sensei
Theo is here!
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Post by emaja on Mar 24, 2011 22:26:38 GMT -5
Well, I didn't even see that there were 2 different cables on the Emo store. I ended up ordering the RCAs instead of the coax. I think I'll call Sarah in the morning and see if they can switch them out since they are the same price.
Eric
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emaja
Sensei
Theo is here!
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Post by emaja on Mar 25, 2011 23:01:58 GMT -5
I talked to tech today and they said that the RCAs were the way to go, so I left the order alone.
I can hardly wait until Tuesday's delivery!
Eric
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Post by copperband on Mar 25, 2011 23:29:04 GMT -5
Good for you. Well then I wonder why Vincent Chen from Emo told me to buy the coaxial  |
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Post by monkumonku on Mar 25, 2011 23:36:16 GMT -5
Good for you. Well then I wonder why Vincent Chen from Emo told me to buy the coaxial Simple... it came up tails when he talked to you and heads when he talked to the OP. ;D |
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Post by roadrunner on Mar 25, 2011 23:38:19 GMT -5
Good for you. Well then I wonder why Vincent Chen from Emo told me to buy the coaxial Heaven only knows.  My guess is personal bias... or maybe he read that Blue Jeans Cable uses the same raw materials for both. If you really want to know why Vincent said what he did, this is the wrong place to be asking. ;D As the old saying goes, "If you want to know something, go straight to the horse's mouth."  |
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Deleted
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Post by Deleted on Mar 26, 2011 6:00:09 GMT -5
Cheap coaxial cable designed for t.v. fitted with RCA adapters works really well for a digital signal. I would have no hesitation using it for digital, it has the same impedance.
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Post by pwong888 on Mar 27, 2011 2:15:31 GMT -5
I want to order a cable for subwoofer, should I buy RCA or digital coax?
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NorthStar
Seeker Of Truth
"And it stoned me to my soul" - Van Morrison
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Post by NorthStar on Mar 27, 2011 2:25:42 GMT -5
I want to order a cable for subwoofer, should I buy RCA or digital coax? For a subwoofer interconnect, get a simple and solid build RCA audio cable (double shielded, or even triple shielded) with good quality RCA jacks. |
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My guess is personal bias... or maybe he read that Blue Jeans Cable uses the same raw materials for both. If you really want to know why Vincent said what he did, this is the wrong place to be asking. ;D As the old saying goes, "If you want to know something, go straight to the horse's mouth." 
