Proper subwoofer wiring may seem like a small detail but it can make a big difference in how your system performs. Hi, sir i have 150 watt, 8ohm, subwoofer ,its support to 4.1 home theatre audio board ???? The results will display the correct subwoofer wiring diagram and impedance load to help find a compatible amplifier. View our speaker wiring configuration diagrams to properly match speaker load with your amplifier's output impedance to get maximum transfer of power.