Cable Length & Speaker Wire Gauge Calculator
Speaker Wire AWG Guide
For 8-ohm speakers, use 16 AWG pure copper wire up to 50 ft, 14 AWG up to 80 ft, and 12 AWG up to 120 ft. Lower-impedance speakers need thicker wire; check the table below. Add routing allowance for wall drops and corners.
Total Speaker Wire: 150 ft
Recommended: 14 AWG speaker wire + 35 ft HDMI
150 ft
Total Speaker Wire
14 AWG
Recommended Gauge
0.12 Ω
Loop Resistance (Longest)
0.13 dB
Signal Loss (Longest)
50 : 1
System Damping Factor
35 ft
HDMI / Sub LFE Run
20 ft