8 gauge speaker wire OFC are the different lengths of oxygen free copper wiring which is also called oxygen free copper wiring with 8 AWG thickness and is normally used in high power audio systems while trying to achieve maximum conductivity and minimal resistance. Here are the highlighted components:
✅ Definition
OFC (Oxygen-Free Copper): Oxygen free copper are high grade copper with little to no oxygen present in the copper which in turn prevents oxidation and oxidation compared to CCA copper clad aluminum.
8 AWG (American Wire Gauge): Thick wire with a circumference of about 3.26 mm and a cross-section area of 8.37 mm2.
🔊 Common Applications
High power subwoofers and amplifiers.
Long speaker runs with voltage drops.
Professional and competition grade auto audio.
Home theater systems with very low resistance.
📏 Electrical Properties (typical for 8 AWG OFC)
Resistance: 0.00206 ohm per meter free
Maximum current: 40 to 55 amps in free air
Speaker wire length: 50 to 100 ft depending on load and with little losses.
🔄 OFC vs CCA
OFC: less heat, more ductility and conductivity.
CCA: more resistance, cheaper and lighter.
👉 If you intend to wire a power hungry sub amp, 8 AWG OFC wire is perfect. Also, if you are an audiophile looking to achieve the best sound with the least signal loss, it’s also recommended.