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Thread: Determining + and - on speaker wires |
    
New member Username: Csetty
USA
Post Number: 1
Registered: May-05
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| Posted on Wednesday, May 18, 2005 - 12:37 pm: |
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I installed an A-BUS Audio distribution system in my new house. I have three keypads that I had to wire up including the speaker wiring. The problem is my speaker wire is not marked + or - in any way. With the wires hooked up a the keypads being powered by the main hub, can I determine which side is + and which is - easily before hooking up the speakers? |
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Gold Member Username: Jan_b_vigne
Dallas,
TX
Post Number: 3745
Registered: May-04
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| Posted on Thursday, May 19, 2005 - 03:33 pm: |
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All multi conductor cables have an identification of some sort that will be used for consistency. Either color, a physical difference such as a stripe or ridge or a thread that is run inside one leg of the cable. Before I can asnwer your question I need to know whether you ran the cables yourself or had someone else do the cabling. How certain are you the cables are wired in correct polarity at each break in the cable? In other words are you certain the same leg of the cable was used as positive from the amplifier to the distribution box to the wall pads, etc.? Who will be hooking up the speakers?
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Silver Member Username: Petergalbraith
Rimouski,
Quebec
Canada
Post Number: 559
Registered: Feb-04
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| Posted on Thursday, May 19, 2005 - 03:47 pm: |
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Put a low voltage on the 2 leads (not connected to anything) and use a volt-meter at the other end to see which is which (by looking for positive voltage vs negative voltage) |
Silver Member Username: Kano
Post Number: 492
Registered: Oct-04
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| Posted on Friday, May 20, 2005 - 05:44 am: |
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You can also use a audio test disc such as "Avia Guide to Home Theatre," I know this particular disc has a test tone to determine if the speakers are in phase or out of phase. |
New member Username: Csetty
USA
Post Number: 2
Registered: May-05
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| Posted on Friday, May 20, 2005 - 11:46 am: |
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Thanks...all of this is so helpfuly, you guys rock!
God bless |
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