Enter your Wire Length, RMS Power, Speaker Impedance, Maximum Power Loss, and Wire Material to find the Recommended Wire Gauge for your setup — plus see the Actual Power Loss, Voltage Drop, and Power Delivered so you know exactly how much juice is reaching your speakers.
Recommended Wire Gauge
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Actual Power Loss
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Voltage Drop
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Power Delivered
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Pure copper wire has better conductivity and lower resistance than CCA wire. CCA wire requires approximately 2 AWG sizes thicker to achieve the same performance as copper wire, making it less efficient for longer runs.
Longer wire runs have higher resistance, which causes power loss and voltage drop. This reduces the power delivered to your speakers and can degrade audio quality, especially at higher volumes.
Using undersized wire causes excessive power loss, voltage drop, and potential heating. This results in reduced speaker volume, poor audio quality, and in extreme cases, could pose a fire hazard.
For most home audio applications, standard copper wire performs adequately. OFC wire offers minimal improvements that are typically not audible in everyday listening scenarios, though audiophiles may prefer it for high-end systems.
Yes, using thicker wire than recommended is always safe and will further reduce power loss. The only downsides are increased cost and difficulty handling thicker, less flexible wire during installation.
Measure the actual path the wire will take from your amplifier to each speaker, including any routing around obstacles. Add 10-20% extra length for connections and unexpected routing needs.