Audio Cable Size Calculator

Determine the optimal speaker cable gauge for your pro AV setup. Calculate power loss, resistance, and damping factor based on cable length and amplifier load.

System Parameters

System Type

Distance (Per Run)

Number of Parallel Runs

Multiplies distance for total spool calculation.

Total Load Impedance

Acceptable Power / Signal Loss

Recommended Minimum Cable Size

14 AWG

2.08 mm² | Based on 1.0 dB target

Calculated Loss

0.82 dB

Run Resistance

0.248 Ω

Total round-trip for 1 run

Total Cable Required

15.0 m

Distance × Runs

System Load

Calculations use standard AWG pure copper resistance at room temperature.
Always consider local codes, insulation ratings, and environmental factors.