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30 foot long Balanced Cables to Balanced/RCA Adapters into Amp's Stereo RCA inputs?

I put this under 'cables', and am repeating it here because I always get good help here.

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I just bought Blu-Ray player: Oppo BDP-105, arrives in a few days.

 Primarily for it's 2 channel audio quality.

It just occurred to me, I could use all of it's audio, video, future streaming features if I:

1. Locate it in the small Home Theater system

2. HDMI to AVR of Home Theater, and

3. Balanced Outputs (audio only): 30 feet to the 2 channel amp in main music system (far end of the same room), use balanced/rca adapters at the amps rca in jacks.

then I could always access/see the menu for audio setup, and use all of it's capabilities
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I've never used Balanced Cables.

Advice? Concerns? Avoid doing this!!!

I could buy 50 ft cable for more slack both ends: any reason to keep it to 30 ft?

thanks for any help,

Elliott
elliottbnewcombjr

Showing 2 responses by vinylzone

vinylzone
288 posts
 
You won't get the benefit of using balanced  cables unless you have fully balanced connections at both ends.  It may work out OK, but then again, it may not.
vinylzone
288 posts
 
Ok, I couldn't remember the name, but what you lose is the common mode rejection of a fully balanced connection.  Meaning, that it is effectively using one leg and ground from the xlr.  

This pretty much means an xlr cable with a xlr to rca adapter performs exactly the same as a single ended cable.  So if you wouldn't use 30 foot SE cable, you also shouldn't use a 30 foot xlr to rca cable.
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