![]() ![]() Tips on using smaller speaker wire and saving moneyĪs real copper wire is more expensive these days and because most people don’t drive speakers at full power, here are some tips to keep costs down: To avoid this when moving from a shorter wire length, we can pick a speaker cable 2 sizes up: 18 AWG -> 16 AWG -> 14 AWG. You can play around with different power amounts, lengths, and speaker Ohms to find the best speaker wire gauge for your audio setup and avoid spending more money than necessary.Įxample: 18AWG wire will lose about 4 watts at maximum power if it’s 50ft long. This is different from the speaker wire size chart section below that provides lengths based on the speaker Ohms only and doesn’t need power ratings. My speaker wire gauge calculator will recommend the right speaker wire gauge based on the power, speaker Ohms, and the specific length you need. ![]() However, I’ve made it easy for you: You can use my speaker wire size calculator or speaker wire size chart sections provided below. The cable length needed for your speaker system.The speaker’s impedance (Ohms) rating – also called the nominal impedance. ![]() Your stereo or amplifier’s power output.The correct gauge speaker wire you need is based on 3 things: How to find the correct size wire for ANY length or speaker system It’s a good compromise between price and power handling as it’s usually affordable and easy to find. In most cases for everyday listening at medium or low power levels (50W RMS or under), 18 gauge (18AWG) wire is what you need. Long (100ft+) speaker runs or higher power applications such as high-power 2 or 4 ohm subwoofers with a short length. Moderate power subwoofers (under 225W) with short lengths. Longer speaker runs for car & home stereo speakers or short runs under 20 ft for 75-100W. Car and home speakers up to 25 ft with average power levels (50W RMS and below). ![]()
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