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Is 18g pure copper wire enough for a 1000rms sub?


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I'd say 10 gauge so you can re-use the wire if you upgrade subs/amp. 12 ga if you have no plans to upgrade. If you have to wire down with multiple subs you're gonna want a smaller ga wire like 12 ga  - but even then you might need to trim some off to fit two strands in 'er. If you wanna say fuck it put some 8 ga wire and laugh at those who use it for their power runs ??

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  • 2 weeks later...

Math:

square root of (2000W * 1.5 ohms) = 54.8 volts

2000W / 54.8 volts = 36.5 amps

Refer to wire gauge chart: Gauge-Chart.jpg

 

For 36.5 amps, you need 10 gauge wire for lengths 0-4 feet. So nope, 18 gauge is not good enough.

EDIT: Oops it two subs, so half that current will go to each. Still need at least 12 gauge though.

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52 minutes ago, k58.cross said:

Math:

square root of (2000W * 1.5 ohms) = 54.8 volts

2000W / 54.8 volts = 36.5 amps

Refer to wire gauge chart: Gauge-Chart.jpg

 

For 36.5 amps, you need 10 gauge wire for lengths 0-4 feet. So nope, 18 gauge is not good enough.

EDIT: Oops it two subs, so half that current will go to each. Still need at least 12 gauge though.

Quick maths 

 

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