In-Wall Speaker Wire Gauge - AVS Forum
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post #1 of 6 Old 01-17-2013, 02:15 PM - Thread Starter
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Hoping that I can use the same gauge speaker wire for all of my runs, but confused about power being lost if the cable resistance/gauge is too high and what "ohm load" means. Based on the length of each run and speaker spec's below, what would you guys suggest? Appreciate any insight.

Center: 7.5'
Front Left: 15.5'
Front Right: 2' (This speaker is located above the AVR cabinet.)
Surround Left: 31'
Surround Right: 17.5'

Center Speaker:
Recommended Power: 10 – 80 Watts
Impedance: 8 Ohms nominal
Sensitivity: 86dB @ 1 Watt/1 meter
Tweeter: One 3/4" dome, video-shielded
Midrange: Dual 3" drivers, video-shielded

Front Left/Right:
Recommended Power: 10 – 120 watts
Impedance: 8 Ohms nominal
Sensitivity: 86dB @ 1 watt/1 meter
Frequency Response: 105Hz – 20kHz (–6dB)
Tweeter: One 3/4" dome, video-shielded
Midrange: Dual 3" drivers, video-shielded

Surround Left/Right:
Recommended Power: 10 – 80 Watts
Impedance: 8 Ohms nominal
Sensitivity: 86dB @ 1 Watt/1 meter
Tweeter: One 1/2" dome, video-shielded
Midrange: One 3" driver, video-shielded
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post #2 of 6 Old 01-17-2013, 02:45 PM
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None of those runs are long enough to be concerned about... Any wire will do. If you're buying a roll of in-wall cable (do buy in-wall rated CL2 cable for that purpose), the price difference from 16-gauge to something larger like 14-gauge is minimal (price delta on a Monoprice 100' spool is $6-8 as you move between 16/14/12 gauge. I wouldn't run anything smaller than 16-gauge, and if it'll make you feel better, use 14 or 12. biggrin.gif

Jeff


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post #3 of 6 Old 01-17-2013, 03:00 PM
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I would go with 12 gauge. Better safe than sorry. The cost difference is negligible. If someday you put a 4 ohm speaker on that 31' run, you don't want to have to switch the wire.

David
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post #4 of 6 Old 01-17-2013, 03:12 PM
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Well, you wouldn't HAVE to switch the wire, but I agree, if you're putting it in-wall for one room, 12 AWG will remove any doubt. Certainly what I ran for my theater, with ~30 ft runs...

Great source for speaker wire info:

http://www.roger-russell.com/wire/wire.htm


Jeff


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post #5 of 6 Old 02-14-2013, 05:43 PM
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Quote:
Originally Posted by Doogals View Post

Hoping that I can use the same gauge speaker wire for all of my runs, but confused about power being lost if the cable resistance/gauge is too high and what "ohm load" means. Based on the length of each run and speaker spec's below, what would you guys suggest? Appreciate any insight.

Center: 7.5'
Front Left: 15.5'
Front Right: 2' (This speaker is located above the AVR cabinet.)
Surround Left: 31'
Surround Right: 17.5'

Center Speaker:
Recommended Power: 10 – 80 Watts
Impedance: 8 Ohms nominal
Sensitivity: 86dB @ 1 Watt/1 meter
Tweeter: One 3/4" dome, video-shielded
Midrange: Dual 3" drivers, video-shielded

Front Left/Right:
Recommended Power: 10 – 120 watts
Impedance: 8 Ohms nominal
Sensitivity: 86dB @ 1 watt/1 meter
Frequency Response: 105Hz – 20kHz (–6dB)
Tweeter: One 3/4" dome, video-shielded
Midrange: Dual 3" drivers, video-shielded

Surround Left/Right:
Recommended Power: 10 – 80 Watts
Impedance: 8 Ohms nominal
Sensitivity: 86dB @ 1 Watt/1 meter
Tweeter: One 1/2" dome, video-shielded
Midrange: One 3" driver, video-shielded

Use lamp cord.

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post #6 of 6 Old 02-14-2013, 09:33 PM
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Quote:
Originally Posted by ChrisHarrington View Post

Use lamp cord.

Lamp cord, while fine for speaker wire generally, is NOT rated for in-wall installation...


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