in wall speaker wire vs. regular speaker wire much difference? - AVS Forum
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post #1 of 8 Old 01-13-2008, 08:19 AM - Thread Starter
 
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is there much difference between in-wall speaker wire and regular speaker wire?

is it a big deal if i use regular 12 guage speaker wire in wall rather then "in wall" speaker wire?
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post #2 of 8 Old 01-13-2008, 08:36 AM
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It might be against code to use non in-wall rated low voltage wiring in your area (it is not against code in mine). I would try to use in-wall rated in any situation where the wiring is, well, in-wall. The different is in the jacket/insulation of the wiring. In-wall rating has to do with burn rate and spread and toxic gases given off by burning wire insulation. If you don't care about fire issues in your home, and in-wall is not required by code, then you can skip the in-wall rated stuff. Personally that is not a risk (however small) I am willing to take.
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post #3 of 8 Old 01-13-2008, 10:55 AM
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spend the extra dollar or two. It could save your life, not to mention most everywhere it is required by code.
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post #4 of 8 Old 01-13-2008, 11:48 AM
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As stated above, check your local codes. Many do not require UL listed cables for low voltage in residential construction. For example Los Angeles county does not as of 2003.

The flame spread and toxic fumes are the reason for the UL listing but in a wood based structure with a few speaker cables, the neagtive effects of non rated cable are practically nil. Its in a commercial building with thousands of network and phone cables where the concern of toxic fumes comes into play.

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post #5 of 8 Old 06-19-2008, 09:51 AM
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In regards to shielding, do I need to worry about interference disrupting a non-shielded, regular speaker wire that runs near a power wire?
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post #6 of 8 Old 06-19-2008, 10:07 AM
 
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Speaker cable with UL-CL3 rating should supersede any in-wall code requirement for residential installations. Plus "in wall" speaker cable has a higher pull strength for those pesky pulls that would rip the jackets on some "regular" speaker cable.

Obviously it's best to stay away from high volt; if you need to cross try to do so at 90 degrees. If you really want to be safe spend the extra and get "twisted pair" speaker cable for its noise cancelling characteristics.
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post #7 of 8 Old 06-19-2008, 11:31 AM
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Quote:
Originally Posted by thumper24 View Post

In regards to shielding, do I need to worry about interference disrupting a non-shielded, regular speaker wire that runs near a power wire?

Totally agree with Matt. Shielded cable is designed to provide common mode noise rejection, but it's not required in every case. As long as you're not running closely parallel (within 18") of any power cables you ought to be fine. If you need to cross, cross at 90 degrees. I'd still use shielded cable though, just to be on the safe side.

Frank

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post #8 of 8 Old 06-20-2008, 11:39 AM
 
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Quote:
Originally Posted by gooomz View Post

is there much difference between in-wall speaker wire and regular speaker wire?

is it a big deal if i use regular 12 guage speaker wire in wall rather then "in wall" speaker wire?

Yeah. It could be illegal, depending on where you live. In most places it is.
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