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Message: <blockquote data-quote="thch" data-source="post: 2737813" data-attributes="member: 562032">damping factor.  it is a ratio of the impedance of the load to the impedance from the amp.  tap a woofer cone not connected to anything.  short out the terminals and tap the cone again.  notice a difference?  damping factor is sometimes refered to as how well the amp can control the speaker, but such is only a good discription when comparing at least one amp with damping factor less that 10.  once damping factor starts getting high, the woofer limits the damping of any oscillations.tube amps often matched output impedance to woofer impedance, for a damping factor of 1.  class D amps are a wide range of amplifiers.  often, the feedback cannot be sensed after the output filter, thus the resistance of the output filter's inductor is seen in series with the woofer.</blockquote>

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