Please help me identify this wire - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 10 Old 09-23-2014, 06:58 PM - Thread Starter
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Please help me identify this wire

Moved into a new house and found this wire coming out of the wall behind the TV cabinet, from the same plate where the speaker wires are coming out from (it's not for speakers, the speaker wires are all accounted for). I have no idea what it is for and I can't trace it anywhere. Some details that may not be obvious from the photo below:
- gray outer jacket
- fairly thin conductors
- red, black and a bare silver stranded conductors
- shielded

Any ideas what it may be used for and where it may lead?

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post #2 of 10 Old 09-23-2014, 07:22 PM
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Subwoofer?
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post #3 of 10 Old 09-23-2014, 08:19 PM - Thread Starter
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Quote:
Originally Posted by az1324 View Post
Subwoofer?
Could be used for anything I guess, if I could only find the other end ...
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post #4 of 10 Old 09-23-2014, 09:30 PM
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IR control, from a volume control with an IR receiver?
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post #5 of 10 Old 09-24-2014, 08:09 AM - Thread Starter
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Quote:
Originally Posted by Neurorad View Post
IR control, from a volume control with an IR receiver?
It goes into the wall behind the built-in TV cabinet and I don't see anything else in the living room like a switch or plug that it may lead to.

I'll put a multimeter on it to see at least whether there's any voltage on the wires (doubt it) or any resistance if the other end is connected to anything.

One more data point, the house was built in 2003 and it was pre-wired for CAT5e, coax, alarm and it seems for dish outside. Not sure what else they were wiring houses for 11 yrs ago.
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post #6 of 10 Old 09-24-2014, 08:20 AM
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Are there speakers in any other rooms? If so, the other end of that cable may be buried behind a volume control or drywall. It may have previously shared a location with a light switch, in a Decora cutout. If unused, it may have been drywalled over.



Subwoofer is another good idea. Again, it may be buried behind drywall if the previous owner didn't use it. Would be at outlet height, near a corner of the room, typically.

If you don't have a need for it, you should forget about it.

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post #7 of 10 Old 09-24-2014, 09:21 AM - Thread Starter
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Bingo! It probably is for a sub, found a somewhat hidden plate in a corner and that's where the other end of the cable comes out (I haven't actually tested it but it looks the same, I'm pretty sure it's the same cable).

So, how would you use this wire for a sub? Terminate it with RCA type connectors just like the sub coax cables are and use it with the LFE out from the AVR, or is it supposed to be used with the speaker inputs on a sub?

I currently just run a coax cable for the sub, but it's hanging out on the wall a bit (from the TV cabinet down to the floor), this would be a way to hide it, though the thin wire doesn't inspire much confidence. What to do ...
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post #8 of 10 Old 09-24-2014, 07:07 PM
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It's a shielded pair. Typically used to carry a balanced audio signal.

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post #9 of 10 Old 09-24-2014, 08:34 PM - Thread Starter
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Quote:
Originally Posted by olyteddy View Post
It's a shielded pair. Typically used to carry a balanced audio signal.
Does the sub LFE signal qualify as balanced?
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post #10 of 10 Old 09-25-2014, 06:07 AM
 
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Quote:
Originally Posted by SirDracula View Post
Does the sub LFE signal qualify as balanced?
You said it used RCA conectors, so, no.
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