In audio system terminology, the **damping factor** gives the ratio of the rated impedance of the loudspeaker to the source impedance. Only the resistive part of the loudspeaker impedance is used. The amplifier output impedance is also assumed to be totally resistive. The source impedance (that seen by the loudspeaker) includes the connecting cable impedance. The load impedance (input impedance) and the source impedance (output impedance) are shown in the diagram.

The damping factor is:

Solving for :

Read more about Damping Factor: Explanation, The Damping Circuit, In Practice

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**damping factor**, with higher**damping factors**greatly reducing distortion ... driven with an iPod Touch (7 Ω output impedance) would have a**damping factor**of just 4.6 ... If the 120 ohms recommendation is applied, the**damping factor**would be an unacceptably low 0.26 and consequently distortion would be significantly higher ...Diffusion Damping - Magnitude

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... arguments have been put forward for the best choice for the

... arguments have been put forward for the best choice for the

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