AWG

Definition

AWG is a US wire-size scale. 12 AWG is thicker than 16 AWG and drops less voltage on a long run. A common budget is round-trip resistance under 5% of the nominal impedance so you do not throw away damping factor or watts as heat in the cable. Two-way length counts: 10 m of run is 20 m of copper. In-wall cable must match local code; this calculator is resistance math, not a fire rating.

Calculators that use this

• Amplification & power

  Speaker Wire Gauge (AWG) Distance Calculator

  Pick a minimum AWG so round-trip copper stays under 5% of the speaker impedance on your cable run.

• Amplification & power

  Amplifier Power Match (SPL) Calculator

  From speaker sensitivity, distance and target SPL, get required watts and whether a receiver can supply them with headroom.

• Amplification & power

  Ohm’s Law AV Rack Load Calculator

  Convert rack watts and wall voltage into amps and check the 80% continuous-load breaker rule.