- Speaker impedance refers to the opposition to electric current flow within the speakers.
- Measured in ohms, speaker impedance defines the relationship between an AV receiver or amplifier with connected speakers.
- Impedance must be the same for the speakers and the AV receiver. Any mismatch causes distortions in sound output.
- A 4 ohms speaker connected to an 8 or 16 ohms AV receiver for instance is disastrous.
- The speaker will strain to match the output of the AV receiver which has a higher impedance.
- While pushing hard to produce sound, the speaker overheats which damages and leads to its failure.
- It is therefore advisable to always get receivers and speakers with matching impedance.
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